How to represent integers in python

Python integer representation method: 1. You can use the isdigit method of the string str to determine whether the string is composed of only numbers; 2. You can also use the [try-except] statement.

The operating environment of this tutorial: Windows 7 system, python version 3.9, DELL G3 computer.

Python integer representation method:

1. You can use the isdigit method of the string str to determine whether the string is composed of only numbers, that is, an integer. If it is an integer, exit the while loop, otherwise continue to request input.

while True:
x = input('Input an integer: ')
if x.isdigit():
break
else:
print 'Please input an *integer*'

2. You can also use the try-except statement. If the input string is an integer, then it can be converted to the int class using the int() function and exit the loop. Otherwise, a ValueError will occur. You can use the try-except statement to capture the ValueError and then continue to request input.

while True:
try:
x = input('Input an integer: ')
x = int(x)
break
except ValueError:
print 'Please input an *integer*'

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