Develop Reference

why it say "the action cannot be completed because the file is open in python“？

def main_loop():
global errname, errtime, error_detail, conclusion
error_detail = ""
facts_all = {}
facts = []
buffer = 0
current_time = datetime.now()
while os.path.exists("C:\Winusr"):
print(paths["wintrace"])
try:
start_point = 0
old_size = os.path.getsize(paths["wintrace"])
while os.path.getsize(paths["wintrace"])>= old_size:
#fo = open(paths["wintrace"], "rb")
#fo.seek(start_point,1)
shutil.copyfile(paths["wintrace"], "C:\Winusr\wintrace1.log")
fo = open("C:\Winusr\wintrace1.log", "rb")
fo.seek(start_point, 1)
errtime = datetime(1900, 1, 1)
old_size = os.path.getsize(paths["wintrace"])
#start from here
for line in fo.readlines():
line = str(line.decode('ISO-8859-1'))
print(line)
if fnmatch.fnmatch(line, "*START DUMP LOG BUFFER*"):
buffer = 1
if fnmatch.fnmatch(line, "*END DUMP LOG BUFFER*"):
buffer = 0
if buffer == 1:
continue
facts_all = collect_facts(line,facts_all,key_string,key_value_dic)
for pattern in error_detect:
if fnmatch.fnmatch(line, pattern):
try:
err_type = df[df["Error Detect Keyword"] == pattern]["Err Type"].to_string(index=False).lstrip()
errname = df[df["Err Type"] == err_type]["Error Name"].tolist()[0].lstrip()
errtime = datetime.strptime(
datetime.fromtimestamp(os.path.getmtime(paths["wintrace"])).strftime("%Y-%m-%d") + " " + line[:8], "%Y-%m-%d %H:%M:%S") #"%d-%b-%Y %H:%M:%S"
#errtime = datetime.fromtimestamp(os.path.getmtime(paths["wintrace"])).strftime("%Y-%m-%d") + " " + line[:8]
#errtime = errtime.strftime('%Y-%m-%d %H:%M:%S')
product = re.findall(r"[/](.+?)[.]", paths["cur"])
product = product[0].split("/")[-1]
tester = tester_name(paths["cur"])
if len(facts_all) != 0:
facts.append(errname)
#idex = 9999
for fact, line in facts_all.items():
if fact in dic1[errname]:
error_detail = error_detail + line + '\n'
facts.append(fact)
print("err_detail1", error_detail)
if len(facts) != 1:
facts = list(set(facts))
conclusion = inference_engine(facts)
print("errtime", errtime)
print("current_time", current_time)
if conclusion != "cannot find solution for this error" and errtime > current_time:
solutions = sop2(errlist, errname, conclusion)
row = recording(tester, product, errname, errtime, error_detail, conclusion)
print("gg pop out GUI!!!")
#send_email(errname, errtime, tester, error_detail)
GUI(errname, errtime, error_detail, conclusion, solutions, row)
current_time = datetime.now()
workbook = xlrd.open_workbook(r"G:\expert system data\Machine Database.xls")
workbook1 = copy(workbook)
ws1 = workbook1.get_sheet(0)
style = xlwt.XFStyle()
style.num_format_str = 'yyyy-mm-dd hh:mm:ss'
ws1.write(row, 8, current_time, style)
workbook1.save(r"G:\expert system data\Machine Database.xls")
error_detail = ""
facts_all = {}
facts = []
error_detail = ""
facts_all = {}
facts = []
except:
continue
start_point = fo.tell()
fo.close()
except:
continue
else:
main_loop()
the paths["wintrace"] is ""C:\Winusr\Wintrace.log", i dont want it is open cause sometimes need to change its name or delete, i copy this file and open the copied one, but it still show it is open, can u help me check where it is opened? besides, i use "filepath = tkinter.filedialog.askopenfilename()", but dont think it will open the wintrace file.the error screenshot

Variable not passing as an Arg [python]

I am trying to automate a functions based on what input is received but I'm getting an error when I try to pass the input as and arg for a function. Heres an example of what Im trying to do
var ='hello world'
def example(data):
#function code
example(var)
thats a basic usage of what Im doing and its returning an error like
var is not defined
here is my actual code
import AriaAudioConfig as Ariaconfig
import AriaMathModule as AriaMath
import AriaLocationModule as AriaLocation
import AriaNLPModule as AriaNLP
from inspect import getmembers, isfunction
import re
import pandas as pd
import csv
from typing import Awaitable, Callable, TypeVar
location = ['geolocatecity','citydiff','locate', 'location', 'where is', 'far', 'distance']
math = ['calculate', 'add', 'subtract', 'multiply', 'divide', 'addition', 'subtraction', 'multiplication', 'division', 'square-root', 'power', 'squared', 'minus']
audio = ['volume','speak', 'sound']
nlp = ['translate', 'translation', 'language', 'english', 'spanish', 'french']
locdict = {'geolocatecity':'blabla','citydiff':'blabla'}
state = 0
city2 = 0
file = pd.read_csv('geolocations.csv')
def dataProcess(data):
global state
global city2
datasearch = data.split()
argsearch = datasearch
datalength = len(datasearch)
for i in range(datalength):
if datasearch[i] in location:
data = datasearch[i]
datacom = typeremoval(functiongrep(AriaLocation))
datacom = str(datacom).split()
datalen = len(datacom)
with open('geolocations.csv', 'rt') as f:
reader = csv.reader(f, delimiter=',')
for row in reader:
for field in row[0]:
for i in range(datalength):
if argsearch[i] == row[0]:
try:
if city in locals():
city2 = argsearch[i]
except:
city = argsearch[i]
if argsearch[i] == row[1]:
state = argsearch[i]
if argsearch[i] == row[2]:
country = argsearch[i]
f.close()
for i in range(datalen):
if str(data) in str(datacom[i]):
activefunction = datacom[i]
if state != 0:
eval('AriaLocation.' + activefunction +'(' + city + ',' + state + ',' + country + ')')
elif city2 != 0:
eval('AriaLocation.' + activefunction + '(' + city + ',' + city2 + ')')
else:
print('uh-oh something went wrong')
elif datasearch[i] in math:
data = datasearch[i]
datacom = typeremoval(functiongrep(AriaMath))
print(data)
if data in datacom:
print('found')
elif datasearch[i] in audio:
data = datasearch[i]
datacom = typeremoval(functiongrep(Ariaconfig))
elif datasearch[i] in nlp:
data = datasearch[i]
datacom = typeremoval(functiongrep(AriaNLP))
#dataProcess('Aria how far am I from Arizona')
def functiongrep(function):
string = ''
functions_list = [o for o in getmembers(function) if isfunction(o[1])]
flen = len(functions_list)
for i in range(flen):
head, sep, tail = str(functions_list[i]).partition('<')
string = string + head
return string
def typeremoval(function):
func = str(function)
func = str(''.join(func))
func = re.sub("[',()]", '', func)
return func
dataProcess('locate Scottsdale Arizona USA')
I want dataProcess() to activate different commands based on what is given as the input.
Exception has occurred: NameError
name 'Scottsdale' is not defined
File "/Users/timyc1/Desktop/DeadIdeas/smartroom/Seavernet/Aria/AriaProcessingModule.py", line 58, in dataProcess
eval('AriaLocation.' + activefunction +'(' + city + ',' + state + ',' + country + ')')
File "/Users/timyc1/Desktop/DeadIdeas/smartroom/Seavernet/Aria/AriaProcessingModule.py", line 95, in <module>
dataProcess('locate Scottsdale Arizona USA')

Don't use eval for this. eval is almost never the solution.
if state != 0:
getattr(AriaLocation, activefunction)(city, state, country)
elif city2 != 0:
getattr(AriaLocation, activefunction)(city, cit2)
else:
print('uh-oh something went wrong')

Nested while loop to extract text data

I am trying to get data from a txt file and put it into a dataframe. Text file looks something like this:
******************************************************************************************************************************
DATE BUY:2018/05/26
****************************************************************************************************************************
STORE: DUBIDUBI SAILOR: 123456
***********************************************************************************************************************
< CLIENT >
NAME CLIENT MEMBER TYPE MEMBER NUMBER: 89101112
ANTONY STARK 1
<PRODUCTS>
NUM-PRODUCTS
6
< ADDRESS TO SEND>
186 FLEET STREET
-----------------------------------------------------------------------------------------------------------------------
< CLIENT >
NAME CLIENT MEMBER TYPE MEMBER NUMBER: 13141516
THOR 2
<PRODUCTS>
NUM-PRODUCTS
2
< ADDRESS TO SEND>
1800 PENNSYLVANIA STREET
<SERVICES>
NUM-SERVICE TYPE OF SERVICE
64 DEVOLUTION
*****************************************************************************************************************************
I want to get a dataframe containing a list of all the clients information that were assisted by same sailor in same store.
What does works: below code reads the text line by line and extract the information of each line.
data []
global STORE, DATE_BUY, SAILOR, CLIENT, MEMBER_NUM, NUM_PRODUCTS, ADDRESS, NUM_SERVICE, TYPE_MEMB, TYPE_SERV
STORE = ""
DATE_BUY = ""
SAILOR = ""
CLIENT = ""
MEMBER_NUM = ""
NUM_PRODUCTS = ""
ADDRESS = ""
NUM_SERVICE = ""
TYPE_MEMB = ""
TYPE_SERV = ""
with open ('myfile', 'r') as txt_file:
read_file = txt_file.readlines()
for i in range(0, len(read_file)):
line = read_file[i]
z = line[0:50]
a = line[0:9]
b = line[0:42]
c = line[112:132]
d = line[0:14]
e = line[0:14]
dif_client = line[0:58]
if a == " STORE":
STORE = line[10:28]
SAILOR = line[30:45]
elif c == " DATE BUY":
DATE_BUY = line[133:145]
elif b == " NAME CLIENT"
nextline = read_file[i + 1]
CLIENT = nextline[0:57]
MEMBER_NUM = nextline[96:126]
TYPE_MEMB = nextline[79:86]
elif d == " < ADDRESS":
nextline = read_file[i + 1]
ADDRESS = nextline[0:63]
elif e == " < PRODUCTS":
nextline = read_file[i + 1]
NUM_PRODUCTS = nextline[0:24]
elif f == " <SERVICES":
nextline = read_file[i + 1]
NUM_SERVICE = nextline[]
TYPE_SERV = nextline[]
data.append({'Store':STORE, 'Sailor':SAILOR, 'Date_Buy':DATE_BUY, 'Client':CLIENT, 'Member_Num':MEMBER_NUM,
'Type_Memb':TYPE_MEMB, 'Address':ADDRESS, 'Products':NUM_PRODUCTS,'Num_Serv':NUM_SERVICE, 'Type_Serv':TYPE_SERV})
df = pd.DataFrame(data)
What does NOT works: when using a nested while loop to extract information of each client assisted by a sailor my code simply does not end running. The code that does not work is:
data []
global STORE, DATE_BUY, SAILOR, CLIENT, MEMBER_NUM, NUM_PRODUCTS, ADDRESS, NUM_SERVICE, TYPE_MEMB, TYPE_SERV
STORE = ""
DATE_BUY = ""
SAILOR = ""
CLIENT = ""
MEMBER_NUM = ""
NUM_PRODUCTS = ""
ADDRESS = ""
NUM_SERVICE = ""
TYPE_MEMB = ""
TYPE_SERV = ""
with open ('myfile', 'r') as txt_file:
read_file = txt_file.readlines()
for i in range(0, len(read_file)):
line = read_file[i]
z = line[0:50]
a = line[0:9]
b = line[0:42]
c = line[112:132]
d = line[0:14]
e = line[0:14]
dif_client = line[0:58]
while dif_client != " < CLIENT >":
if a == " STORE":
STORE = line[10:28]
SAILOR = line[30:45]
elif c == " DATE BUY":
DATE_BUY = line[133:145]
elif b == " NAME CLIENT"
nextline = read_file[i + 1]
CLIENT = nextline[0:57]
MEMBER_NUM = nextline[96:126]
TYPE_MEMB = nextline[79:86]
elif d == " < ADDRESS":
nextline = read_file[i + 1]
ADDRESS = nextline[0:63]
elif e == " < PRODUCTS":
nextline = read_file[i + 1]
NUM_PRODUCTS = nextline[0:24]
elif f == " <SERVICES":
nextline = read_file[i + 1]
NUM_SERVICE = nextline[]
TYPE_SERV = nextline[]
data.append({'Store':STORE, 'Sailor':SAILOR, 'Date_Buy':DATE_BUY, 'Client':CLIENT, 'Member_Num':MEMBER_NUM,
'Type_Memb':TYPE_MEMB, 'Address':ADDRESS, 'Products':NUM_PRODUCTS,'Num_Serv':NUM_SERVICE, 'Type_Serv':TYPE_SERV})
df = pd.DataFrame(data)
The desired output should look something like this. I know that each client information comes when the word < CLIENT > appears in text.
Date_buy Store Sailor Client Member_Number Num_Products Address_to_send num_Service type_serv
2018/05/26 dubidubi 123456 ANTONY STARK 89101112 6 186 FLEET STREET
2018/05/26 dubidubi 123456 THOR 13141516 2 1800 PENNSYLVANIA STREET 64 DEVOLUTION

Thanks for the description. The problem is in the infinite loop you built:
dif_client = line[0:58]
while dif_client != " < CLIENT >":
if a == " STORE":
...
dif_client doesn't change within the loop. There is no break or other exit, only the while condition (which is good design). Therefore, once you get into the loop, you have no way to leave: dif_client is constant.
Your logic is incorrect: you have two loops that are trying to walk through the lines of the file:
for i in range(0, len(read_file)):
...
while dif_client != " < CLIENT >":
# Process one line
The body of the while is designed to process one line. When you're done with that, you need to go to the next iteration of the for to get the next line. Finding a CLIENT line is a if decision, not a loop.

Python tnsnames.ora parser

I need a dict containing all database connections from tnsnames.ora file.
I need to go from this :
(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=mydbserver.mydomain.com)(PORT=1521)))(CONNECT_DATA=(SID=CATAL)(SERVER=DEDICATED)(SERVICE_NAME=mydb.mydomain.com)))
to this :
{'DESCRIPTION': [{'ADDRESS_LIST': [{'ADDRESS': [{'PROTOCOL': 'TCP'},
{'HOST': 'mydbserver.mydomain.com'},
{'PORT': '1521'}
]
}]
},
{'CONNECT_DATA': [{'SID': 'CATAL'},
{'SERVER': 'DEDICATED'},
{'SERVICE_NAME': 'mydb.mydomain.com'}
]
}
]
}
So far, my code is :
def get_param(param_string):
print("get_param input:", param_string)
if param_string.count("(") != param_string.count(")"):
raise Exception("Number of '(' is not egal to number of ')' : " + str(param_string.count("(")) + " and " + str(param_string.count(")")))
else:
param_string = param_string[1:-1]
splitted = param_string.split("=")
keywork = splitted[0]
if len(splitted) == 2:
return {keywork: splitted[1]}
else:
splitted.remove(keywork)
values = "=".join(splitted)
return {keywork: get_value_list(values)}
def get_value_list(value_string):
print("get_value_list input:", value_string)
to_return = list()
if "=" not in value_string and "(" not in value_string and ")" not in value_string:
to_return.append(value_string)
elif value_string[0] != "(":
raise Exception("[ERROR] Format error '(' is not the first char: " + repr(value_string))
else:
parenth_count = 0
strlen = len(value_string)
current_value = ""
for i in range(0,strlen):
current_char = value_string[i]
current_value += current_char
if current_char == "(":
parenth_count += 1
elif current_char == ")":
parenth_count += -1
if parenth_count == 0:
to_return.append(get_param(current_value))
if i != (strlen - 1):
if value_string[i+1] == "(":
to_return += get_value_list(value_string[i+1:])
else:
raise Exception("Format error - Next char should be a '('. value_string[i+1]:" + repr(value_string[i+1]) )
break
print("get_value_list return:", to_return)
if len(to_return) == 0:
to_return = ""
elif len(to_return) == 1:
to_return = to_return[0]
return to_return
connection_infos = "(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=mydbserver.mydomain.com)(PORT=1521)))(CONNECT_DATA=(SID=CATAL)(SERVER=DEDICATED)(SERVICE_NAME=mydb.mydomain.com)))"
current_connection = get_param(connection_infos)
print("current_connection:", current_connection)
pprint(current_connection)
And I got this :
{'DESCRIPTION': [{'ADDRESS_LIST': {'ADDRESS': [{'PROTOCOL': 'TCP'},
{'HOST': 'mydbserver.mydomain.com'},
'PORT']
}
},
'CONNECT_DATA'
]
}
So I'm doing something wrong. And I feel I'm doing something too complicated. Would anyone point some mistake I made or help me find a simpler way to do this ?

I have a working code now, but I'm not really satisfied with it. It's too long, not flexible, and will not work with some other tnsnames.ora possible formats :
class Tnsnames():
def __init__(self, file_path, file_name='tnsnames.ora'):
self.file_path = file_path
self.file_name = file_name
self.load_file()
def load_file(self):
try:
fhd = open(os.path.join(self.file_path, self.file_name), 'rt', encoding='utf-8')
except:
raise
else:
#Oracle doc : https://docs.oracle.com/cd/B28359_01/network.111/b28317/tnsnames.htm#NETRF007
file_content = list()
for l in fhd:
l = " ".join(l.split()).strip(" \n")
if len(l) > 0:
if "#" not in l:
file_content.append(l)
fhd.close()
file_content = " ".join(file_content)
connections_list = dict()
current_depth = 0
current_word = ""
current_keyword = ""
name_to_register = ""
is_in_add_list = False
current_addr = dict()
connections_aliases = dict()
stop_registering = False
connections_duplicates = list()
for c in file_content:
if c == " ":
pass
elif c == "=":
current_keyword = str(current_word)
current_word = ""
if current_keyword == "ADDRESS_LIST":
is_in_add_list = True
elif c == "(":
if current_depth == 0:
current_keyword = current_keyword.upper()
names_list = current_keyword.replace(" ","").split(",")
if len(names_list) == 1:
name_to_register = names_list[0]
else:
name_to_register = None
# We use either the first name with at least
# a dot in it, or the longest one.
for n in names_list:
if "." in n:
name_to_register = n
break
else:
name_to_register = max(names_list, key=len)
names_list.remove(name_to_register)
for n in names_list:
if n in connections_aliases.keys():
print("[ERROR] already registered alias:", n,
". Registered to:", connections_aliases[n],
". New:", name_to_register,
". This possible duplicate will not be registered.")
connections_duplicates.append(n)
stop_registering = True
else:
connections_aliases[n] = name_to_register
if not stop_registering:
connections_list[name_to_register] = {"ADDRESS_LIST": list(),
"CONNECT_DATA": dict(),
"LAST_TEST_TS": None}
current_depth += 1
elif current_depth in [1,2,3]:
current_depth += 1
else:
print("[ERROR] Incorrect depth:", repr(current_depth), ". Current connection will not be registered" )
del connections_list[name_to_register]
stop_registering = True
elif c == ")":
if current_depth == 1:
if stop_registering:
stop_registering = False
else:
# Before moving to next connection,
# we check that current connection
# have at least a HOST, and a SID or
# SERVICE_NAME
connection_is_valid = True
if isinstance(connections_list[name_to_register]["ADDRESS_LIST"], dict):
if "HOST" not in connections_list[name_to_register]["ADDRESS_LIST"].keys():
print("[ERROR] Only one address defined, and no HOST defined. Current connection will not be registered:", name_to_register)
connection_is_valid = False
elif isinstance(connections_list[name_to_register]["ADDRESS_LIST"], list):
for current_address in connections_list[name_to_register]["ADDRESS_LIST"]:
if "HOST" in current_address.keys():
break
else:
print("[ERROR] Multiple addresses but none with HOST. Current connection will not be registered:", name_to_register)
connection_is_valid = False
else:
print("[ERROR] Incorrect address format:", connections_list[name_to_register]["ADDRESS_LIST"], " Connection:", name_to_register)
connection_is_valid = False
if not connection_is_valid:
del connections_list[name_to_register]
else:
if "SERVICE_NAME" not in connections_list[name_to_register]["CONNECT_DATA"].keys() and \
"SID" not in connections_list[name_to_register]["CONNECT_DATA"].keys():
print("[ERROR] Missing SERVICE_NAME / SID for connection:", name_to_register)
del connections_list[name_to_register]
elif current_depth == 2:
if is_in_add_list:
is_in_add_list = False
if not stop_registering:
if len(connections_list[name_to_register]["ADDRESS_LIST"]) == 1:
connections_list[name_to_register]["ADDRESS_LIST"] = connections_list[name_to_register]["ADDRESS_LIST"][0]
elif current_depth == 3:
if is_in_add_list:
if not stop_registering:
connections_list[name_to_register]["ADDRESS_LIST"].append(current_addr)
current_addr = dict()
elif current_keyword.upper() in ["SID", "SERVER", "SERVICE_NAME"]:
if not stop_registering:
connections_list[name_to_register]["CONNECT_DATA"][current_keyword.upper()] = current_word.upper()
elif current_depth == 4:
if is_in_add_list:
if not stop_registering:
current_addr[current_keyword.upper()] = current_word.upper()
current_keyword = ""
current_word = ""
current_depth += -1
else:
current_word += c
self.connections = connections_list
self.aliases = connections_aliases
self.duplicates = connections_duplicates
Test tnsnames.ora :
########################################
# This is a sample tnsnames.ora #
########################################
###################################################
# PRODDB
###################################################
proddb.mydbs.domain.com, PRODDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = proddb1.mydbs.domain.com)(PORT = 1522))
(ADDRESS = (PROTOCOL = TCP)(HOST = proddb2.mydbs.domain.com)(PORT = 1522))
(ADDRESS = (PROTOCOL = TCP)(HOST = proddb3.mydbs.domain.com)(PORT = 1522))
(ADDRESS = (PROTOCOL = TCP)(HOST = proddb4.mydbs.domain.com)(PORT = 1522))
)
(CONNECT_DATA =
(SID = PRODDB)
(SERVER = DEDICATED)
(SERVICE_NAME = proddb.mydbs.domain.com)
)
)
###################################################
# DEVDBA : Test database for DBA usage
###################################################
devdba.mydbs.domain.com, DEVDBA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = devdba.mydbs.domain.com)(PORT = 1521))
)
(CONNECT_DATA =
(SID = DEVDBA)
)
)
Test code :
from pprint import pprint
from lib_database import Tnsnames
tnsnnames = Tnsnames('/usr/lib/oracle/12.2/client64/network/admin')
print('Connexions:')
pprint(tnsnnames.connections)
print('Aliases:')
pprint(tnsnnames.aliases)
print('Duplicates:')
pprint(tnsnnames.duplicates)
Output :
Connexions:
{'DEVDBA.MYDBS.DOMAIN.COM': {'ADDRESS_LIST': {'HOST': 'DEVDBA.MYDBS.DOMAIN.COM',
'PORT': '1521',
'PROTOCOL': 'TCP'},
'CONNECT_DATA': {'SID': 'DEVDBA'},
'PRODDB.MYDBS.DOMAIN.COM': {'ADDRESS_LIST': [{'HOST': 'PRODDB1.MYDBS.DOMAIN.COM',
'PORT': '1522',
'PROTOCOL': 'TCP'},
{'HOST': 'PRODDB2.MYDBS.DOMAIN.COM',
'PORT': '1522',
'PROTOCOL': 'TCP'},
{'HOST': 'PRODDB3.MYDBS.DOMAIN.COM',
'PORT': '1522',
'PROTOCOL': 'TCP'},
{'HOST': 'PRODDB4.MYDBS.DOMAIN.COM',
'PORT': '1522',
'PROTOCOL': 'TCP'}],
'CONNECT_DATA': {'SERVER': 'DEDICATED',
'SERVICE_NAME': 'PRODDB.MYDBS.DOMAIN.COM',
'SID': 'PRODDB'}}
Aliases:
{'DEVDBA': 'DEVDBA.MYDBS.DOMAIN.COM', 'PRODDB': 'PRODDB.MYDBS.DOMAIN.COM'}
Duplicates:
[]
I could not find other Python parser for tnsnames.ora files. If you know about one, please point me to it.

You can do this with pyparsing:
import pyparsing as pp
# 1. Literals
VAR = pp.Word(pp.alphas + "_", pp.alphanums + "_").setName('variable')
SPACE = pp.Suppress(pp.Optional(pp.White()))
EQUALS = SPACE + pp.Suppress('=') + SPACE
OPEN = pp.Suppress('(') + SPACE
CLOSE = pp.Suppress(')') + SPACE
INTEGER = pp.Optional('-') + pp.Word(pp.nums) + ~pp.Char(".")
INTEGER.setParseAction(lambda t: int(t[0]))
FLOAT = pp.Optional('-') + pp.Word(pp.nums) + pp.Char('.') + pp.Optional(pp.Word(pp.nums))
FLOAT.setParseAction(lambda t: float(t[0]))
STRING = pp.Word(pp.alphanums + r'_.-')
# 2. Literal assignment expressions: (IDENTIFIER = VALUE)
INTEGER_ASSIGNMENT = pp.Group(OPEN + VAR + EQUALS + INTEGER + CLOSE)
FLOAT_ASSIGNMENT = pp.Group(OPEN + VAR + EQUALS + FLOAT + CLOSE)
STRING_ASSIGNMENT = pp.Group(OPEN + VAR + EQUALS + STRING + CLOSE)
# 3. Nested object assignment
ASSIGNMENT = pp.Forward()
NESTED_ASSIGNMENT = pp.Group(OPEN + VAR + EQUALS + ASSIGNMENT + CLOSE)
ASSIGNMENT << pp.OneOrMore(INTEGER_ASSIGNMENT |
FLOAT_ASSIGNMENT |
STRING_ASSIGNMENT |
NESTED_ASSIGNMENT)
# 4. Net service name(s): NAME(.DOMAIN)[, NAME(.DOMAIN)...]
NET_SERVICE_NAME = pp.OneOrMore(pp.Word(pp.alphas + '_' + '.', pp.alphanums + '_' + '.')
+ pp.Optional(pp.Suppress(',')))
# 5. Full TNS entry
TNS_ENTRY = NET_SERVICE_NAME + EQUALS + ASSIGNMENT
Here is some example data:
TNS_NAMES_ORA = """
MYDB =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = server01)(PORT = 25881))
)
(CONNECT_DATA =
(SID = MYDB01)
)
)
OTHERDB.DOMAIN, ALIAS_FOR_OTHERDB.DOMAIN =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = server02)
(PORT = 25881)
))
(CONNECT_DATA = (SID = MYDB02))
)
)
"""
This part is a little one-off-ish, but here's an example of putting some additional parsing on top of that in order to extract all the data:
def _parse_addresses(tns_entry, addresses):
"""
Parse ADDRESS keywords from the a TNS entry
:param definition: Unparsed part of the TNS entry
:param addresses: List of addresses parsed
"""
keyword = tns_entry[0]
# Base Case: We found an ADDRESS, so extract the data
# and do not recurse into it
if keyword.upper() == 'ADDRESS':
port = None
host = None
for k, v in tns_entry[1:]:
if k == 'PORT':
port = v
elif k == 'HOST':
host = v
if port is None:
print('WARNING: Ignoring ADDRESS due to missing PORT')
elif host is None:
print('WARNING: Ignoring ADDRESS due to missing HOST')
addresses.append({'host': host, 'port': port})
# Else recursively descend through the definition
for d in tns_entry[1:]:
# Only parse sub-lists, not literals
if isinstance(d, list):
_parse_addresses(d, addresses)
def _parse_connect_data(tns_entry, sids):
"""
Parse CONNECT_DATA keywords from the a TNS entry
:param definition: Unparsed part of the TNS entry
:param sids: List of Oracle SIDs
"""
keyword = tns_entry[0]
# Base Case: We found a CONNECT_DATA, so extract the data
# and do not recurse into it
if keyword.upper() == 'CONNECT_DATA':
sid = None
for k, v in tns_entry[1:]:
if k == 'SID':
sid = v
if sid is None:
print('WARNING: Ignoring CONNECT_DATA due to missing SID')
sids.append(sid)
for d in tns_entry[1:]:
# Only parse sub-lists, not literals
if isinstance(d, list):
_parse_connect_data(d, sids)
def get_connection_info(net_service_name: str, tns_string: str):
"""
Generator over all simple connections inferred from a TNS entry
:param net_service_name: Net service name to return connection info for
:param tns_string: tnsnames.ora file contents
"""
# Parse the TNS entries and keep the requested definition
definition = None
for tokens, _start, _end in TNS_ENTRY.scanString(tns_string):
if net_service_name in tokens.asList()[0]:
definition = tokens.asList()[1]
break
# Check if we found a definition
if definition is None:
raise KeyError(f'No net service named {net_service_name}')
# Look for all the ADDRESS keywords
addresses = []
_parse_addresses(definition, addresses)
# Look for all CONNECT_DATA keywords
sids = []
_parse_connect_data(definition, sids)
# Emit all combinations
for address in addresses:
for sid in sids:
yield {'sid': sid, **address}
# Try it out!
for connection_info in get_connection_info('MYDB', TNS_NAMES_ORA):
print(connection_info)
I wrote a blog post about it here for "fun":
https://unparameterized.blogspot.com/2021/02/parsing-oracle-tns-files-in-python.html

import re
def find_match(tns_regex, y):
x1 = re.match(tns_regex, y, re.M + re.I + re.S)
if x1 is not None:
x1 = x1.groups(1)[0] # Only first match is returned
x1 = x1.strip('\n')
return(x1)
# Removing commented text
with open("C:\\Oracle\\product\\11.2.0\\client_1\\network\\admin\\tnsnames.ora") as tns_file:
with open("test_tns.ora", 'w+') as output:
lines =tns_file.readlines()
for line in lines:
if not line.startswith('#'):
output.write(line)
with open('test_tns.ora') as tns_file:
tnsnames = tns_file.read()
tnsnames1 = re.split(r"\){3,}\n\n", tnsnames)
# Regex matches
tns_name = '^(.+?)\s?\=\s+\(DESCRIPTION.*'
tns_host = '.*?HOST\s?=\s?(.+?)\)'
tns_port = '.*?PORT\s?=\s?(\d+?)\)'
tns_sname = '.*?SERVICE_NAME\s?=\s?(.+?)\)'
tns_sid = '.*?SID\s?=\s?(.+?)\)'
easy_connects = []
for y in tnsnames1:
y = '%s))' % y
l = [find_match(x, y) for x in [tns_name, tns_host, tns_port, tns_sname, tns_sid]]
d = {
'name': l[0],
'host': l[1],
'port': l[2],
'service_name': l[3],
'sid': l[4]
}
easy_connects.append(d)
print(easy_connects)

I have written this small code. It parses tnsnames.ora. It is fast and works great.
def parse_ora_tns_file(fpath,tnskey=None,return_all_keys=False,view_file=False,logger=None)->str:
"""
This function parse oracle tns file
parms: fpath : full file path like
fpath=filepath\tnsnames.ora
param: tnskey: find tns entry for given tns key like tnskey='ABC.WORLD'
param: return_all_keys: if True it will return all tns key names
param: view_file : if True it returns tnsnames.ora as str
"""
clean_tns_file=''
if logger:
logger.info('Reading tnsnames ora file at {} ...'.format(fpath))
with open(fpath,mode='r') as tns_file:
lines =tns_file.readlines()
for line in lines:
if not line.startswith('#'):
clean_tns_file=clean_tns_file+line
#clean file
clean_str = clean_tns_file.replace('\n','')
clean_str = clean_str.replace('\t','')
#replace = with ' ' so later I can split with ' '
#with below it becomes like ABC.WORLD = (DESCRIPTION) to ABC.WORLD ' ' (DESCRIPTION)
clean_str = clean_str.replace('=',' ')
#Below one output to ['ABC.WORLD','',' (DESCRIPTION)']
lstresult= clean_str.split(" ")
#Below code remove extra space from char list like it becomes ['ABC.WORLD','','(DESCRIPTION)']
lstresult = [txt.strip() for txt in lstresult]
#Below code to replace () chars to '' from list so output as ['ABC.WORLD','','DESCRIPTION']
removetable = str.maketrans('', '', '()')
out_list = [s.translate(removetable) for s in lstresult]
#Below code remove any empty list items so output as ['ABC.WORLD','DESCRIPTION']
out_list = list(filter(None, out_list))
#find index of DESCRIPTION words
indices = [i for i, x in enumerate(out_list ) if x.upper() == "DESCRIPTION"]
tns_keys= ""
for i in indices:
#use index of DESCRIPTION to tns keys which is required for regx pattern below.
tns_keys=tns_keys+out_list[i-1]+"|"
if return_all_keys:
return tns_keys.replace('|',',')[:-1]
if logger:
logger.info('Keys found in tnsnames ora: {}'.format(tns_keys))
regex = r"\s+(?!^({}))".format(tns_keys)
result = re.sub(regex, '', clean_tns_file, 0, re.MULTILINE)
if view_file:
return result
if result:
for match in re.finditer(r'^((?:{}))(.*)'.format(tns_keys), result, re.MULTILINE):
if match.group(1) == tnskey:
#removing = sign from start of entry
if logger:
logger.info('Found tns entry: {} {}'.format(match.group(1),match.group(2)))
return match.group(2)[1:]
if logger:
logger.info('No tns entry found for {}'.format(tnskey))
return None

Why is my Code Printing the same Last Name?

The Code Below I wrote takes input from a sample file which contains First and Last names. Then it converts those names to sample emails. For some reason the Script keeps printing the same Last name over and over.
namess.txt looks like this:
firstname,lastname
CODE:
import os, re, time, getpass, linecache
Original = os.path.join(os.path.expanduser('~'), 'Desktop','namess.txt')
File = os.path.join(os.path.expanduser('~'), 'Desktop','output.txt')
badNames = []
Names = []
def RemCommas():
outfile = open(os.path.join('C:\\', 'Users', getpass.getuser(), 'Desktop','output.txt'),'w')
Filedata = open(Original).read()
outfile.write(re.sub(',', ' ', Filedata))
outfile.close()
def ClassNum():
count = 6
Year = int(time.strftime('%Y'))
Class = str((Year - 2013) + 6)
return Class
def ReadStoreFile():
i = 0
OpenFile = open(File)
LenFile = len(OpenFile.readlines())
while i < LenFile:
i += 1
badNames.append(linecache.getline(File, i))
def CleanNames():
i = 0
while i < len(badNames):
cleaned = badNames[i].rstrip()
Names.append(cleaned)
i += 1
def NamePrint():
Interns = 'makchessclub.org'
arrayname = []
i = 0
j = 0
m = 0
while m < len(Names):
Name = Names[m]
Name = Name.lower()
InternName = Name[0] + Name[1]
#------------Checking for space and first name--
while i < len(Name):
if Name[i] == ' ':
i = Name.index(' ')
break;
i += 1
#---------------adding last name in an array----
Namelen = len(Name) - (i+1)
while j < Namelen:
arrayname.append(Name[i+1])
j += 1
i += 1
#---------------Final Name Print----------------
Lastname = ''.join(arrayname)
#print arrayname
#Lastname = Lastname.strip(' ')
#print InternName + Lastname + ClassNum() + Interns
file = open('C:\\Users\\username\\Desktop\\emails.txt', 'a')
file.write(InternName + Lastname + ClassNum() + Interns + '\n')
file.close()
m += 1
RemCommas()
ReadStoreFile()
CleanNames()
NamePrint()
print ''
os.system('pause')

The reason the last name doesn't change is because you are not resetting arrayname in your loop. You keep appending names to it, and the program picks the first one. So you should put your arrayname = [] after the while m < len(Names):

I guess this what you are trying to do:
import os
import re
import time
def create_mails(input_path, output_path, year, addr):
with open(input_path, 'r') as data:
mail = re.sub(r'(\w+)\s*,\s*(\w+)\n?', r'\1\g<2>%s%s\n' % (year, addr), data.read())
with open(output_path, 'w') as output:
output.write(mail.lower())
print 'Mail addresses generated and saved to', output_path
Demo:
create_mails(
os.path.join(os.path.expanduser('~'), 'Desktop', 'namess.txt'),
os.path.join(os.path.expanduser('~'), 'Desktop', 'output.txt'),
str(int(time.strftime('%Y')) - 2013 + 6),
'#makchessclub.org'
)
If namess.txt is something like this:
First, Last
John,Doe
Spam, Ham
Cabbage, egg
Then output.txt is going to be like this:
firstlast6#makchessclub.org
johndoe6#makchessclub.org
spamham6#makchessclub.org
cabbageegg6#makchessclub.org