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Formatting .txt file before usage of readlines() [closed]

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Because I need to sort a .txt file with quicksort, I used readlines() to use my function. The problem is that it isn't formatted like before the usage of readlines().
f = open(filename)
array = f.readlines()
Then I used my quicksort function.
How the Input File looks like:
12.01.2020 bcd
05.02.1990 efd
13.04.1992 cba
How it should look like after quicksort:
05.02.1990 efd
13.04.1992 cba
12.01.2020 bcd
but in my code it's looking like this:
'05.02.1990\tefd\n', '13.04.1992\tcba\n', '12.01.2020\tbcd\n'
Any Suggestions how i can correct my usage of readlines()?

This is actually how readlines is used. It generates a list of strings that are found in your text file. As you can see each string is separated by a ,, the tabs are represented as \t and the new line is represented as \n.
You can simply write the array to a file again to get the wanted output.
with open('sorted.txt', 'w') as of:
for s in sorted:
of.write(s)
PS. what you're printing is the content of your output list, this will replace things like tabs and newline characters with their unicode representation. If you loop through your output and print the content, you'll see the output that you want to see.
for s in output:
print(s)

why doesn't this work even though the strings match [closed]

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games=[]
file=open("egames.txt",'r')
for game in file:
games.append(game)
file.close()
print("All games made by Rockstar Games")
for game in games:
currentline=game.split(",")
publisher=currentline[5]
if publisher=="Rockstar Games":
print(currentline[0],currentline[1])
I dont get any errors i just get nothing being printed] with Rockstar Games.The actual Text file

Lines read from a file iterator end with newline characters. You should strip them as part of the normalization:
for game in file:
games.append(game.rstrip())

I'm guessing that the issue is the trailing newline characters, which are invisible to your eye. Try stripping off any white space:
publisher = currentline[5].strip()

Not able to successfully parse python regex from reading the contents of a file [closed]

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I've got an issue where my regex isn't parsing the output of a file I created:
#!/usr/bin/env python3
import wget, re
url=''
filename=wget.download(url)
with open ('Output.txt', "r") as f:
readlines=f.read()
ret=re.sub("^.*\^", "", readlines)
print(ret)
According to this site, the regex I'm using "^.*\^" is valid for my output. Sample output I'm feeding it is something like this:
1212-2010^readthispart
Where it has a carot for a delimiter. I tried double and single quotes to no avail and I'm not sure if it's an issue elsewhere in my code or what, but the printout does not match what I'm looking for. Ideas?

If I'm reading your question and edits right you're looking to return 'readthispart', correct? If so you need to look into using look-behinds in combination with search. See https://docs.python.org/2/library/re.html. re.search("(?<=\^).*",myinput)

You need to enable multiline mode:
re.sub('^.*\^', '', readlines, flags=re.MULTILINE)

Count characters in each line of a file? [closed]

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Any tips on how to count the amount of characters in each line of a text file, to then compare them using python?

It would be helpful to have an idea of what the end goal of your code is. What information do you want to gain from comparing the number of characters on a line? I would have written this as a comment, but it's not yet an option for me since I just joined.
If you're completely lost and don't know where to begin, here are some general bits of code to get you started (this is using Python 3.x):
file = open("YourFileName.txt", "r")
stringList = file.readlines()
The first line will open (read, hence the "r") the file in question. The second line of code goes through each line in the file and assigns them to a variable I called stringList. stringList is now a list, in which each element is a string corresponding to one line of your text file.
So,
print(stringList)
should return
['line0', 'line1', 'line2', 'line3', etc...]
It's possible that stringList could look like
['line0\n', 'line1\n', 'line2\n', 'line3\n', etc...]
depending on how your file is formatted. In case you didn't know, the '\n' is a newline character, equivalent to hitting enter on the keyboard.
From there you can create another list to hold the length of each line, and then loop through each element of stringList to store the lengths.
lengthList = []
for line in stringList:
lengthList.append(len(line))
len(line) takes the number of characters in a string and converts it to the equivalent integer value. Your lengthList will then contain how many characters are on each line, stored as ints. If there are '\n's, you may want to use len(line) - 1, depending on what you want to do with the lengths.
I hope this is helpful; I can't help with the comparisons until you provide some code and explain more specifically what you want to accomplish.

Python function,issue with input file [closed]

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I have function written by a colleague working in same field. So I know I should write script to execute python code,but issue of how the format of the input bbfile looks like bothers me.As I see fidlines read all the content,correct?My may concern is bbfile(tab delimited in my case),should it have three columns one for freq,other for breal and third for bimag?
def bbcalfunc(bbfile,nfreqlst):
fid=file(bbfile,'r')
fidlines=fid.readlines()
#define the delimiter
if bbfile.find('.txt')>=0:
delimiter='\t'
elif bbfile.find('.csv')>=0:
delimiter=','
freq=[]
breal=[]
bimag=[]
for ii in range(1,len(fidlines)):
linestr=fidlines[ii]
linestr=linestr.rstrip()
linelst=linestr.split(delimiter)
if len(linelst)>2:
freq.append(float(linelst[0]))
breal.append(float(linelst[1]))
bimag.append(float(linelst[2]))
else:
pass
freq=np.array(freq)
breal=np.array(breal)
bimag=np.array(bimag)
nfreq=np.log10(np.array(nfreqlst))
brinterp=interpolate.splrep(freq,breal)
brep=1E3*interpolate.splev(nfreq, brinterp)
biinterp=interpolate.splrep(freq,bimag)
bip=1E3*interpolate.splev(nfreq, biinterp)
return brep,bip

The format of the input file depends on the extension that you use, a .txt file will be a Tab Separated Values (tsv) file while a .csv file will be a Comma Separated Values (csv) file (please note that this is not a general convention, it is something that was decided by that colleague of yours that wrote the function, or maybe it's a local convention).
Each line of the file is usually composed by three {tab,comma} separated values, i.e., frequency, real part and imaginary part of a complex value.
I said usually composed because the code silently discards all the
lines for which the element count is less than three.
There is something here and there that can be streamlined in the code,
but it's inessential.
Rather, to answer your question re closing the file, change the first part
of the function to
def bbcalfunc(bbfile,nfreqlst):
#define the delimiter
if bbfile.find('.txt')>=0:
delimiter='\t'
elif bbfile.find('.csv')>=0:
delimiter=','
# slurp the file
with file(bbfile,'r') as fid:
fidlines=fid.readlines()
...