CODEWITHSUNDEEP
pythonprintingtuplesoutput
bbesase
bbesase

Reputation: 861

Printing output formatting

I have this function that takes a list and prints it out to an outfile: 

 def writeToFile(files):

for path2 in files:
    fi= open(fileo, 'w')
    fi.truncate()
    fi.write('\n' + str(foundFiles2))
    fi.close()


foundFiles2 = [
'bb.TechnicalDefinition.UnitTests.vbproj'
'bb.Units.UnitTests.vbproj'
'bb.Utilities.UnitTests.vbproj'
'bb.Visualization.UnitTests.vbproj' ]

It prints to the file no problem however I want it to print a new line after every tuple in the list. However, when it write to the file it looks like this:

'bb.APDS.UnitTests.vbproj', 'bb.DatabaseAPI.UnitTests.vbproj', 'bb.DataManagement.UnitTests.vbproj',

I thought the 

fi.write('\n' + str(foundFiles2))

would print out each tuple separately on a new line but it doesn't. Do I need a loop in here somewhere or is my syntax just plain wrong?

Upvotes: 1

Views: 73

Answers (2)

TehTris
TehTris

Reputation: 3217

Open the file before the for loop and close the file after the for loop ( or use with like ashwini suggested because it automatically does that.)

The way you are going at it, it will only write the same foundFiles2 list over and over again depending on how many indexes are in files.

If foundFiles2 is the list you want to iterate over then you need to use it in the for statement:

for item in foundFiles2:
     fi.write(item+'\n')

this will go to the first item, and then write it, and then the second item and then write it etcetera.

Upvotes: 1

Ashwini Chaudhary
Ashwini Chaudhary

Reputation: 251166

You should iterate over the list instead of printing it's str version.

>>> lis = [1,2,3]
>>> str(lis)      #str just returns a string representation of the string
'[1, 2, 3]'
>>> for x in lis : #use for loop to iterate over individual items of the list
...     print x
...     
1
2
3

your code:

for path2 in files:
    #"w" mode automatically truncates the file for you
    # Always use `with` statement for handling files, it automatically
    # closes the file.     
    with open(fileo,"w") as f:    
        for text in foundFiles2:  #iterate over each value in the list
            f.write(text+"\n")

Upvotes: 1

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