Question

How to append item to list N times in Python

Answer 1

a_list = [0] * 5

print(a_list)

'''
run:

[0, 0, 0, 0, 0]

'''

 

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Answer 2

a_list = ['abc'] * 5

print(a_list)

'''
run:

['abc', 'abc', 'abc', 'abc', 'abc']

'''

 

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Answer 3

a_list = [3] * 10

print(a_list)

'''
run:

[3, 3, 3, 3, 3, 3, 3, 3, 3, 3]

'''

 

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Answer 4

a_list = [3] * 5

a_list.extend([4 for i in range(5)])

print(a_list)

'''
run:

[3, 3, 3, 3, 3, 4, 4, 4, 4, 4]

'''

 

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Answer 5

a_list = [0]*0

a_list.extend([4 for i in range(5)])

print(a_list)

'''
run:

[4, 4, 4, 4, 4]

'''

 

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