How to sort data of a file in python(windows)

Question

We are trying to implement a file based student record program.We want to sort the file that contain the details of the student according to the roll number which is at the first position of every line.

the file contains the following data:

1/rahul/cs
10/manish sharma/mba
5/jhon/ms
2/ram/bba

We want to sort the file's data according to the first field ie roll number.

Any help shall be great

Answer 1

You use sorted :

dataSorted = list(sorted(f.readlines()))

If you want to sort only the first element use:

dataSorted = list(sorted(f.readlines(), lambda line: line[:line.find('/')]))

f is the file-object. Further information: help(sorted)