Generate sub numbers from number (remove last number each time)

Question

This is my function: def sub(number): tmp = [] tmp.append(number) while len(str(number)) > 1: tmp.append(int(str(number)[:-1])) number = int(str(number)[:-1]) return tmp Output: Input: 1234 output: [1234, 123, 12, 1] Now my question is, Is there any more efficient way to do this in the python? Select the correct answer from above options

Answer 1

You can divide by 10, 10**2, 10**3 and so on and keep the integer part 1-Liner using the list comprehension [1234//10**i for i in range(len(str(1234)))] Or ans = [] for i in range(len(str(1234))): ans.append(1234//10**i ) Output: [1234, 123, 12, 1] Learn data science with python course to improve your technical knowledge.