Develop Reference

Format path within Text File for consumption in Python

I am writing a Python script for use by multiple non-Python users.
I have a text file containing the parameters my script needs to run.
One of the inputs is a path. I cannot get my script to run and was thinking it was because I had referenced my path incorrectly.
I have tried:
C:\temp\test
"C:\temp\test"
r"C:\temp\test"
C:/temp/test
"C:/temp/test"
C:\\temp\\test
"C:\\temp\\test"
I have added each one of these into a text file, which is called and read in my Python script.
I have other parameters and they are called correctly, my script seems to run when I hard code the path in. I say seems because I think there are a few bugs I need to check, but it runs with no errors.
When I use the text file I get this error - which varies depending on if I used one of the above examples:
WindowsError: [Error 123] The filename, directory name, or volume
label syntax is incorrect: 'c:\temp\match1\jpg\n/.'
My code is as follows:
print ("Linking new attachments to feature")
fp = open(r"C:\temp\Match1\Match_Table.txt","r") #reads my text file with inputs
lines=fp.readlines()
InFeat = lines[1]
print (InFeat)
AttFolder = lines[3] #reads the folder from the text file
print (AttFolder)
OutTable = lines[5]
if arcpy.Exists(OutTable):
print("Table Exists")
arcpy.Delete_management(OutTable)
OutTable = lines[5]
print (OutTable)
LinkF = lines[7]
print (LinkF)
fp.close()
#adding from https://community.esri.com/thread/90280
if arcpy.Exists("in_memory\\matchtable"):
arcpy.Delete_management("in_memory\\matchtable")
print ("CK Done")
input = InFeat
inputField = "OBJECTID"
matchTable = arcpy.CreateTable_management("in_memory", "matchtable")
matchField = "MatchID"
pathField = "Filename"
print ("Table Created")
arcpy.AddField_management(matchTable, matchField, "TEXT")
arcpy.AddField_management(matchTable, pathField, "TEXT")
picFolder = r"C:\temp\match1\JPG" #hard coded in
print (picFolder)
print ("Fields added")
fields = ["MatchID", "Filename"]
cursor = arcpy.da.InsertCursor(matchTable, fields)
##go thru the picFolder of .png images to attach
for file in os.listdir(picFolder):
if str(file).find(".jpg") > -1:
pos = int(str(file).find("."))
newfile = str(file)[0:pos]
cursor.insertRow((newfile, file))
del cursor
arcpy.AddAttachments_management(input, inputField, matchTable, matchField, pathField, picFolder)

From your error "'c:\temp\match1\jpg\n/.'", i can see "\n" character, \n is symbole of new line ( when you press enter button ) you should remove that character from end of your path! did you try to do that? you can use .lstrip("\n") , replcae() or regx methods for remove that character.
Try to open and read line by line of your input file like this:
read_lines = [line.rstrip('\n') for line in open(r"C:\temp\Match1\Match_Table.txt")]
print(read_lines)
print(read_lines[1])

Printing to a new line after sorting a text file

For my task I have to be able to print the data that is in text file after it has been sorted. I have been able to sort it but it dosen't print it to a new line even though in notepad they are on seperate lines.
My Notepad Documents has this:
http://i.stack.imgur.com/Xn0pT.png
The code I already have set up is:
file = open(class_name , 'a') #opens the file in 'append' mode so you don't delete all the information
name = (name)
file.write(str(name + " : " )) #writes the information to the file
file.write(str(score))
file.write('\n')
file.close() #safely closes the file to save the information
viewscore = input("Do you wish to view previous results for your class").lower()
if viewscore == "yes".lower():
f = open(class_name , "r")
lines = [line for line in f if line.strip()]
f.close()
lines.sort()
print (lines)
The Variables I have are:
class_name = class_name + ".txt"
name = input().title()
Then when run the output I get is:
['Dan : 0\n', 'Jana : 0\n', 'Kyle : 0\n']
Please tell me if I have to add anything.

Here is a work version for me:
class_name = 'data.txt'
name = 'Jim'
score = 100
file = open(class_name , 'a') #opens the file in 'append' mode so you don't delete all the information
line_data = name + " : " + str(score) + "\n" # data to write
file.write(line_data)
file.close() #safely closes the file to save the information
viewscore = raw_input("Do you wish to view previous results for your class?").lower()
if viewscore == "yes".lower():
f = open(class_name , "r")
lines = [line for line in f if line.strip()]
f.close()
lines.sort()
for line in lines:
print line
else: # add else case to debug
print 'no for', viewscore
First, you can put the line you want to write in a variable, and then write it.
Second, if you use Python2.x, use raw_input() for input string.
Third, if you have a if, better to write an else for easy to debug the code.

You should try this code. Why are you writing 3 things separately? It is probably writing \n as a string, not putting things in new line.
f.write(name+' : '+str(score)+'\n')

What you are printing is the list you called lines and the way you see the output is the way the type list is displayed. What you want to do is print the content of the list as one string. For that you can join the content as follow:
In [1]: lines = ['Dan : 0\n', 'Jana : 0\n', 'Kyle : 0\n']
In [2]: print "".join(lines)
Dan : 0
Jana : 0
Kyle : 0

Making a loop to write new lines to a txt file using python

I'm trying to get the script to read a text file of Congress members in which each line is formatted like this:
Darrell Issa (R-Calif)
I want it to print a line to a different file that's formatted like this (notice the added comma):
Darrell Issa,(R-Calif)
For some reason the script below works but it only does it for the first line. How do I get it to execute the loop for each line?
basicfile = open('membersofcongress.txt', 'r')
for line in basicfile:
partyst = line.find('(')
partyend = line.find(')')
party = line[partyst:partyend+1]
name = line[+0:partyst-1]
outfile = open('memberswcomma.txt','w')
outfile.write(name)
outfile.write(",")
outfile.write(party)
outfile.close()
basicfile.close()
print "All Done"
Thank you in advance for your help.

According to documentation,
'w' for only writing (an existing file with the same name will be
erased)
When you open your output file with w, loop keeps creating a new txt file for each line. Using a would be better.
basicfile = open('membersofcongress.txt', 'r')
for line in basicfile:
partyst = line.find('(')
partyend = line.find(')')
party = line[partyst:partyend+1]
name = line[+0:partyst-1]
outfile = open('memberswcomma.txt','a')
outp = name + "," + party + "\n"
outfile.write(outp)
outfile.close()
basicfile.close()
EDIT:
Much better solution would be,
You open your output file at the begining of the loop instead of inside of it.
basicfile = open('membersofcongress.txt', 'r')
outfile = open('memberswcomma.txt','w')
for line in basicfile:
partyst = line.find('(')
partyend = line.find(')')
party = line[partyst:partyend+1]
name = line[+0:partyst-1]
outp = name + "," + party + "\n"
outfile.write(outp)
outfile.close()
basicfile.close()

ok a few things to fix this, use 'a' mode to open your outfile and open it just before the loop, close the outfile after the loop and not inside it.
something like this should work (tested it)
basicfile = open('membersofcongress.txt', 'r')
outfile = open('memberswcomma.txt','a')
for line in basicfile:
partyst = line.find('(')
partyend = line.find(')')
party = line[partyst:partyend+1]
name = line[0:partyst-1]
outfile.write(name)
outfile.write(",")
outfile.write(party)
outfile.close()
basicfile.close()
print "All Done"

Writing user input to a text file in python

Ok here we go, i've been looking at this all day and i'm going crazy, i thought i'd done the hard bit but now i'm stuck. I'm making a highscores list for a game and i've already created a binary file that store the scores and names in order. Now i have to do the same thing but store the scores and names in a text file.
This is the binary file part but i have no idea where to start with using a text file.
def newbinfile():
if not os.path.exists('tops.dat'):
hs_data = []
make_file = open('tops.dat', 'wb')
pickle.dump(hs_data, make_file)
make_file.close
else:
None
def highscore(score, name):
entry = (score, name)
hs_data = open('tops.dat', 'rb')
highsc = pickle.load(hs_data)
hs_data.close()
hs_data = open('tops.dat', 'wb+')
highsc.append(entry)
highsc.sort(reverse=True)
highsc = highsc[:5]
pickle.dump(highsc, hs_data)
hs_data.close()
return highsc
Any help on where to start with this would be appreciated. Thanks

I think you should use the with keywords.
You'll find examples corresponding to what you want to do here.
with open('output.txt', 'w') as f:
for l in ['Hi','there','!']:
f.write(l + '\n')

Start here:
>>> mydata = ['Hello World!', 'Hello World 2!']
>>> myfile = open('testit.txt', 'w')
>>> for line in mydata:
... myfile.write(line + '\n')
...
>>> myfile.close() # Do not forget to close
EDIT :
Once you are familiar with this, use the with keyword, which guaranties the closure when the file handler gets out of scope:
>>> with open('testit.txt', 'w') as myfile:
... for line in mydata:
... myfile.write(line + '\n')
...

Python has built-in methods for writing to files that you can use to write to a text file.
writer = open("filename.txt", 'w+')
# w+ is the flag for overwriting if the file already exists
# a+ is the flag for appending if it already exists
t = (val1, val2) #a tuple of values you want to save
for elem in t:
writer.write(str(elem) + ', ')
writer.write('\n') #the write function doesn't automatically put a new line at the end
writer.close()

Python script how can it do short

I have written a script on a python "icecast server", and I changed some strings in "/etc/icecast2/icecast.xml" like this:
import os,sys,re
def ices2():
changedir=open(pathh + "icecast3.xml", "w")
data=open("/etc/icecast2/icecast.xml").read()
changedir.write(re.sub("<source-password>hackme</source-password>","<source-password>123</source-password>" % x,data))
changedir.close()
ices2()
def ices1():
changedir1=open(pathh + "icecast2.xml", "w")
data=open(pathh + "icecast3.xml").read()
changedir1.write(re.sub("<relay-password>hackme</relay-password>", "<relay-password>123</relay-password>" % x,data))
changedir1.close()
os.remove(pathh + "icecast3.xml")
ices1()
def ices():
changedir2=open("/etc/icecast2/icecast.xml", "w")
data=open(pathh + "icecast2.xml").read()
changedir2.write(re.sub("<admin-password>hackme</admin-password>","<admin-password>123</admin-password>" % x,data))
changedir2.close()
os.remove(pathh + "icecast2.xml")
ices()
...but it's too long for the script. How can I shorten it? I need to do some changes in one file, open it to make changes and close it without any lost data. I know that it can be done in one function, but how to do it I don't know.
I need three changes in one function like this:
def ices():
changedir=open(pathh + "icecast3.xml", "w")
data=open("/etc/icecast2/icecast.xml").read()
changedir.write(re.sub("<source-password>hackme</source-password>","<source-password>123</source-password>",data))
changedir1.write(re.sub("<relay-password>hackme</relay-password>", "<relay-password>123</relay-password>",data))
changedir2.write(re.sub("<admin-password>hackme</admin-password>","<admin-password>123</admin-password>",data))
changedir.close()
i did it in one function and my script short than upper one. But it's wrong i need do it correctly
changedir=open(pathh + "icecast3.xml", "w")
data=open("/etc/icecast2/icecast.xml").read()
Here I create a new file "pathh + "icecast3.xml" (pathh-/home/user/Downloads), but I need to open file:
"/etc/icecast2/icecast.xml"
...read it and write changes to the same file.

All three functions do the same so you can join them into one. This is not complete solution but I think that you could go on from here on your own:
import os,sys,re
def ices(in_path, out_path, remove=False):
changedir = open(out_path, "w")
data = open(in_path, 'r')
changedir.write(re.sub("<source-password>hackme</source-password>","<source-password>123</source-password>" % x,data.read())) # this is wrong as well but I take it as an example
changedir.close()
data.close()
if remove:
os.remove(in_path)
You can call this function with:
ices(base_path + 'icecast2.xml', base_path + 'icecast3.xml', True)
Hints:
it's better to use os.path.join for creating the full paths (as opposed to string concatenation)
look at with statement and cosider using it for increased readability
EDIT (respecting the clarification in comment):
Sorry I missed the different strings in write. You can do it simply like this:
f = open(filename, 'r')
data = f.read()
f.close()
for tag in ['source', 'relay', 'admin']
sub_str = "<{tag_name}>%s</{tag_name}>".format(tag_name=tag+'-password')
data = re.sub(sub_str % 'hackme', sub_str % '123', data)
f = open(filename+'.new', 'w')
f.write(data)
f.close()