How to create a numerical list in python

Release: 2020-06-19 17:10:59
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How to create a numerical list in python

How to create a list of values ​​in python:

1. range

range() can produce a series of values

Syntax :range(start subscript (inclusive), end subscript (exclusive)[, step size])

Example:

for value in range(1,5):
    print(value)

print("*"*30)

for value in range(1,5,2):
    print(value)
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Result:

1

2

3

4

****************************** *******

1

3

2. Use list() to convert the values ​​generated by range into a list

Example:

nums=list(range(1,5))
print(nums)
print("*"*30)

nums=list(range(1,5,2))
print(nums)
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Result:

[1, 2, 3, 4]

**************** ***************

[1, 3]

3. List parsing: quickly generate a numerical list

Syntax example: list=[value**2 for value in range(1,11)]

Example:

list=[value**2 for value in range(1,5)]
print(list)
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Result:

[1, 4 , 9, 16]

For more related knowledge, please pay attention to the python video tutorial column

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