Hi i want to create a code that read a text file and print the average of each person in the file, i have this in the folder
boys.txt
ed lin,3,1,4,2
thomas block,6,3,3
Functions.py
def read_txt(file_txt):
file = open(file_txt, "r")
lines = file.readlines()
file.close()
return lines
from Functions import read_txt
file_txt = input("input file: ")
read_txt(file_txt)
lines = (sum(lines)/len(lines))
print(lines)
so i want to print something like
ed lin: 2.5
thomas block: 4
but i dont know how to continue and with my code i get error
Try changing your other file to:
from Functions import read_txt
file_txt = input("input file: ")
lines read_txt(file_txt)
lines = '\n'.join(['%s: %s' % (line.split(',')[0], sum(list(map(int, line.strip().split(',')[1:]))) / len(line.strip().split(',')[1:])) for line in lines])
print(lines)
Output:
ed lin: 2.5
thomas block: 4
I don't know why you are not allowed to use format, but without using it, it would be a little too tedious... In the meantime, here is another way you can do.
with open("boys.txt", "r") as f:
contents = f.read()
lines = contents.strip().split("\n")
for l in lines:
boy = l.split(",")
length = len(boy)
score = 0
for i in range(1, length):
score += int(boy[i])
average = score / (length-1)
print("{}: {}".format(boy[0], average))
You could also use
from Functions import read_txt
file_txt = input("input file: ")
with open(file_txt, 'r') as f:
lines = f.readlines()
for line in lines:
name = line[0: line.index(',')]
data = [int(num) for num in (line[line.index(',')+1:].split(','))]
nums = len(data)
data = sum(data)
print(f"{name}: {data/nums}")
Related
def add():
while True:
try:
a = int(input("How many words do you want to add:"))
if a >= 0:
break
else:
raise ValueError
except ValueError:
print("Not valid ")
return a
for i in range(add()):
key_i = input(f"Turkish meaning: {i + 1}: ")
value_i = input("translated version: ")
with open('words.txt', 'a+') as f:
f.write("'"+key_i+':')+ f.write(value_i+"'"+",")
My goal is to create my own dictionary,but I am adding a list into the txt file, so it is added into the txt file like this
words = {'araba:kol',
but when I search the txt file it gives me the whole list
def search():
while 1:
search = str(input("Search: "))
if search not in["exit", "Exit"]:
with open('words.txt', 'r+') as f:
line = f.readline()
while line:
data = line.find(search)
if not data == -1:
print(line.rstrip('\n'))
line = f.readline()
else:
line = f.readline()
else:
break
f.close()
What can I do to make it output like this
car:araba
Use JSON module to avoid having to write the dictionary line by line yourself.
import json
with open('words.json', 'a+') as f:
json.dump({key_i: value_i}, f)
with open('data.json', 'r') as f:
d2 = json.load(f)
d2 is now the data that you wrote to the file.
Note, that you should change the a+ to 'w' as you only have one dictionary per file.
points = "temp"
a = "temp"
f = "temp"
def pointincrementer():
global points
points = 0
for line in f:
for word in a:
if word in line:
scorelen = int(len(user+","))
scoreval = line[0:scorelen]
isolatedscore = line.replace(scoreval,'')
if "," in line:
scorestr = isolatedscore.replace(",","")
score = int(scorestr)
points = score + 1
print(points)
def score2():
f = open('test.txt','r')
a = [user]
lst = []
for line in f:
for word in a:
if word in line:
pointincrementer()
print(points)
point = str(points)
winning = (user+","+point+","+"\n")
line = line.replace(line,winning)
lst.append(line)
f.close()
f = open('test.txt','w')
for line in lst:
f.write(line)
f.close()
print("Points updated")
user = input("Enter username: ") #change so user = winners userid
with open('test.txt') as myfile:
if user in myfile.read():
score2()
else:
f = open('test.txt','r')
f2 = f.read()
f3 = (f2+"\n"+user)
f.close()
f = open('test.txt','w')
f.write(f3)
f.close()
score2()
This is paired with test.txt, which looks like this:
one,1,
two,5,
three,4,
four,94,
When this code is run, it it will ask the user their name (as expected) and then will print 0 (when it should instead print the user's score) and then Points updated. Anybody know how to sort this out?
There are many problems with your code. You should not be using global variables like that. Each function should be passed what it needs, do its computing, and return values for the caller to handle. You should not be reading the file multiple times. And you can't write the file while you still have it open with the with statement.
Here, I read the file at the beginning into a Python dictionary. The code just updates the dictionary, then writes it back out at the end. This makes for a simpler and more maintainable structure.
def readdata(fn):
data = {}
for row in open(fn):
info = row.strip().split(',')
data[info[0]] = int(info[1])
return data
def writedata(fn,data):
f = open(fn,'w')
for k,v in data.items():
print( f"{k},{v}", file=f )
def pointincrementer(data,user):
return data[user] + 1
def score2(data, user):
points = pointincrementer(data, user)
print(points)
data[user] = points
print("Points updated")
user = input("Enter username: ")
data = readdata( 'test.txt' )
if user not in data:
data[user] = 0
score2(data, user)
writedata( 'test.txt', data )
The f in pointincrementer() refers to the "temp" string declared on the third line. The f in score2() refers to the file handle declared immediately below the function header. To get around this, you can pass the file handle into pointincrementer():
def pointincrementer(file_handle):
global points
points = 0
for line in file_handle:
for word in a:
if word in line:
scorelen = int(len(user+","))
scoreval = line[0:scorelen]
isolatedscore = line.replace(scoreval,'')
if "," in line:
scorestr = isolatedscore.replace(",","")
score = int(scorestr)
points = score + 1
print(points)
def score2():
file_handle = open('test.txt','r')
a = [user]
lst = []
for line in f:
print(line)
for word in a:
if word in line:
pointincrementer(file_handle)
print(points)
point = str(points)
winning = (user+","+point+","+"\n")
line = line.replace(line,winning)
lst.append(line)
f.close()
f = open('test.txt','w')
for line in lst:
f.write(line)
f.close()
print("Points updated")
This leads to a parsing error. However, as you haven't described what each function is supposed to do, this is the limit to which I can help. (The code is also extremely difficult to read -- the lack of readability in this code snippet is likely what caused this issue.)
Every time I write a code I keep getting error. here is the code I have
def main():
outflow = open("studentList.txt", "r")
for line in outflile:
line[:-1].split(" ")
print(line)
main()
If your studentList file contain the name of the student one per each line so the way of reading is:
def main():
noOfStudents = 0
outflow = open("studentList.txt", "r")
for line in outflow:
noOfStudents+=1
print(line.rstrip("\n"))
print("Total no of students is :", noOfStudents)
outflow.close()
main()
Output:
student A
student B
student C
Total no of students is : 3
If students names are in line by line in the text file then use this
filename = "studentList.txt"
with open(filename) as f:
lines = f.read().splitlines()
print(lines)
or if students names are separated from space then use the following one
filename = "studentList.txt"
with open(filename, 'r') as f:
lines = f.read().encode("utf-8").replace(" ", "\n")
print(lines)
you do not have any outflile (probably a typo) difined this will raise NameError, so you can use:
def main():
outflow = open("studentList.txt", "r")
for line in outflow:
line[:-1].split(" ")
print(line)
main()
even better:
with open("studentList.txt", "r") as outflow:
for line in outflow:
line = line.rstrip().split(" ")
print(line)
Am Writing a program that prompts for a file name, then opens that file and reads through the file, looking for lines of the form:
X-DSPAM-Confidence: 0.8475
I want to count these lines and extract the floating point values from each of the lines and compute the average of those values. Can I please get some help. I just started programming so I need something very simple. This is the code I have already written.
fname = raw_input("Enter file name: ")
if len(fname) == 0:
fname = 'mbox-short.txt'
fh = open(fname,'r')
count = 0
total = 0
#Average = total/num of lines
for line in fh:
if not line.startswith("X-DSPAM-Confidence:"): continue
count = count+1
print line
Try:
total += float(line.split(' ')[1])
so that total / count gives you the answer.
Iterate over the file (using the context manager ("with") handles the closing automatically), looking for such lines (like you did), and then read them in like this:
fname = raw_input("Enter file name:")
if not fname:
fname = "mbox-short.txt"
scores = []
with open(fname) as f:
for line in f:
if not line.startswith("X-DSPAM-Confidence:"):
continue
_, score = line.split()
scores.append(float(score))
print sum(scores)/len(scores)
Or a bit more compact:
mean = lambda x: sum(x)/len(x)
with open(fname) as f:
result = mean([float(l.split()[1]) if line.startswith("X-DSPAM-Confidence:") for l in f])
A program like the following should satisfy your needs. If you need to change what the program is looking for, just change the PATTERN variable to describe what you are trying to match. The code is written for Python 3.x but can be adapted for Python 2.x without much difficulty if needed.
Program:
#! /usr/bin/env python3
import re
import statistics
import sys
PATTERN = r'X-DSPAM-Confidence:\s*(?P<float>[+-]?\d*\.\d+)'
def main(argv):
"""Calculate the average X-DSPAM-Confidence from a file."""
filename = argv[1] if len(argv) > 1 else input('Filename: ')
if filename in {'', 'default'}:
filename = 'mbox-short.txt'
print('Average:', statistics.mean(get_numbers(filename)))
return 0
def get_numbers(filename):
"""Extract all X-DSPAM-Confidence values from the named file."""
with open(filename) as file:
for line in file:
for match in re.finditer(PATTERN, line, re.IGNORECASE):
yield float(match.groupdict()['float'])
if __name__ == '__main__':
sys.exit(main(sys.argv))
You may also implement the get_numbers generator in the following way if desired.
Alternative:
def get_numbers(filename):
"""Extract all X-DSPAM-Confidence values from the named file."""
with open(filename) as file:
yield from (float(match.groupdict()['float'])
for line in file
for match in re.finditer(PATTERN, line, re.IGNORECASE))
I have two different functions in my program, one writes an output to a txt file (function A) and the other one reads it and should use it as an input (function B).
Function A works just fine (although i'm always open to suggestions on how i could improve).
It looks like this:
def createFile():
fileName = raw_input("Filename: ")
fileNameExt = fileName + ".txt" #to make sure a .txt extension is used
line1 = "1.1.1"
line2 = int(input("Enter line 2: ")
line3 = int(input("Enter line 3: ")
file = (fileNameExt, "w+")
file.write("%s\n%s\n%s" % (line1, line2, line3))
file.close()
return
This appears to work fine and will create a file like
1.1.1
123
456
Now, function B should use that file as an input. This is how far i've gotten so far:
def loadFile():
loadFileName = raw_input("Filename: ")
loadFile = open(loadFileName, "r")
line1 = loadFile.read(5)
That's where i'm stuck, i know how to use this first 5 characters but i need line 2 and 3 as variables too.
f = open('file.txt')
lines = f.readlines()
f.close()
lines is what you want
Other option:
f = open( "file.txt", "r" )
lines = []
for line in f:
lines.append(line)
f.close()
More read:
https://docs.python.org/2/tutorial/inputoutput.html#reading-and-writing-files
from string import ascii_uppercase
my_data = dict(zip(ascii_uppercase,open("some_file_to_read.txt"))
print my_data["A"]
this will store them in a dictionary with lettters as keys ... if you really want to cram it into variables(note that in general this is a TERRIBLE idea) you can do
globals().update(my_data)
print A