[python] Error when creating a new text file with python?

This function doesn't work and raises an error. Do I need to change any arguments or parameters?

import sys

def write():
    print('Creating new text file') 

    name = input('Enter name of text file: ')+'.txt'  # Name of text file coerced with +.txt

    try:
        file = open(name,'r+')   # Trying to create a new file or open one
        file.close()

    except:
        print('Something went wrong! Can\'t tell what?')
        sys.exit(0) # quit Python

write()

This question is related to python file python-3.x file-io

The answer is


If the file does not exists, open(name,'r+') will fail.

You can use open(name, 'w'), which creates the file if the file does not exist, but it will truncate the existing file.

Alternatively, you can use open(name, 'a'); this will create the file if the file does not exist, but will not truncate the existing file.


You can use open(name, 'a')

However, when you enter filename, use inverted commas on both sides, otherwise ".txt"cannot be added to filename


instead of using try-except blocks, you could use, if else

this will not execute if the file is non-existent, open(name,'r+')

if os.path.exists('location\filename.txt'):
    print "File exists"

else:
   open("location\filename.txt", 'w')

'w' creates a file if its non-exis


following script will use to create any kind of file, with user input as extension

import sys
def create():
    print("creating new  file")
    name=raw_input ("enter the name of file:")
    extension=raw_input ("enter extension of file:")
    try:
        name=name+"."+extension
        file=open(name,'a')

        file.close()
    except:
            print("error occured")
            sys.exit(0)

create()

This works just fine, but instead of

name = input('Enter name of text file: ')+'.txt' 

you should use

name = raw_input('Enter name of text file: ')+'.txt'

along with

open(name,'a') or open(name,'w')

import sys

def write():
    print('Creating new text file') 

    name = raw_input('Enter name of text file: ')+'.txt'  # Name of text file coerced with +.txt

    try:
        file = open(name,'a')   # Trying to create a new file or open one
        file.close()

    except:
        print('Something went wrong! Can\'t tell what?')
        sys.exit(0) # quit Python

write()

this will work promise :)


You can os.system function for simplicity :

import os
os.system("touch filename.extension")

This invokes system terminal to accomplish the task.


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