32 lines
558 B
Python
32 lines
558 B
Python
#!/usr/bin/env python3
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# coding: utf8
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"""02-is-prime.py"""
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def is_prime(number):
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"""
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:Examples:
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>>> is_prime(20021731)
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True
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>>> is_prime(23)
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True
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>>> is_prime(1)
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False
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>>> is_prime(20)
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False
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"""
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if number < 2:
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return False
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for divisor in range(2, int(number ** 0.5) +1):
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if number % divisor == 0:
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return False
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return True
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assert is_prime(20021731) == True
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assert is_prime(23) == True
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assert is_prime(1) == False
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assert is_prime(4) == False
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assert is_prime(20) == False
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