Append to a file
Write a Python program to append data to an existing file. Step-by-step explanation, colour-coded code and real output.
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1,677 articles · page 73 of 140Overwrite a file
Write a Python program to overwrite the content of an existing file. Step-by-step explanation, colour-coded code and real output.
Read a file in read mode
Write a Python program to read a file in reading mode. Step-by-step explanation, colour-coded code and real output.
All permutations of a string
Write a Python function that returns all permutations of a string, without itertools. Step-by-step explanation, colour-coded code and real output.
Integer to words
Write a Python function that converts an integer from 0 to 999 into English words. Step-by-step explanation, colour-coded code and real output.
Validate a mobile number
Write a Python function to check whether a mobile number is valid: 10 digits starting with 6, 7, 8 or 9 (optionally with...
Length of the last word
Write a Python function that returns the length of the last word in a string. Step-by-step explanation, colour-coded code and real output.
Search for words in a string
Write a Python function that reports which of the given words appear in a string. Step-by-step explanation, colour-coded code and real output.
Add two binary numbers
Write a Python function to add two binary numbers given as strings. Step-by-step explanation, colour-coded code and real output.
Library management system
Write a Python program with functions to add, issue, return and list books in a library. Step-by-step explanation, colour-coded code and real output.
Reverse an integer
Write a Python function to reverse an integer, keeping the sign. Step-by-step explanation, colour-coded code and real output.
Leap year function
Write a Python function to check whether a year is a leap year. Step-by-step explanation, colour-coded code and real output.
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