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Added Python Program to Check Perfect Number #2244

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Merged
merged 5 commits into from
Jul 28, 2020
Merged

Added Python Program to Check Perfect Number #2244

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cc21ea1
Added Python Program to Check Perfet Number
Utsav1999 Jul 27, 2020
fb23a6c
CodeSpell Error Fix - 1
Utsav1999 Jul 27, 2020
0c6adf1
Build Error Fix - 1
Utsav1999 Jul 28, 2020
b0e9317
Made suggested changes
Utsav1999 Jul 28, 2020
c02b24e
Use generator expression
cclauss Jul 28, 2020
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38 changes: 22 additions & 16 deletions maths/perfect_number.py
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Original file line number Diff line number Diff line change
@@ -1,14 +1,15 @@
"""
== Perfect Number ==
In number theory, a perfect number is a
positive integer that is equal to the sum
of its positive divisors, excluding the
number itself.
>>> For 6 ==> divisors[1, 2, 3, 6]
Excluding 6 sum(divisors) = 1 + 2 + 3 = 6
So, 6 is a Perfect Number
Other examples of Perfect Numbers: 28, 486, ...
== Perfect Number ==
In number theory, a perfect number is a positive integer
that is equal to the sum of its positive divisors, excluding
the number itself.
For 6 ==> divisors[1, 2, 3, 6]
Excluding 6 sum(divisors) = 1 + 2 + 3 = 6
So, 6 is a Perfect Number

Other examples of Perfect Numbers: 28, 486, ...

https://en.wikipedia.org/wiki/Perfect_number
"""


Expand All @@ -21,8 +22,17 @@ def perfect(number: int) -> bool:
A number at most can be divisible
by the half of the number except
the number itself
>>> 6 at most can be divisible by 3
except 6 itself
6 at most can be divisible by 3
except 6 itself
"""

"""
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Doctests must be in the (first) docstring of the function.

Suggested change
"""
"""
"""
"""

>>> perfect(27)
False
>>> perfect(28)
True
>>> perfect(29)
False
"""

if (number % i) == 0:
Expand All @@ -37,8 +47,4 @@ def perfect(number: int) -> bool:
if __name__ == "__main__":
print("Program to check whether a number is a Perfect number or not.......")
number = int(input("Enter number: "))
check = perfect(number)
if check:
print("{} is a Perfect Number.".format(number))
else:
print("{} is not a Perfect Number.".format(number))
print(f"{number} is {'' if perfect(number) else 'not'} a Perfect Number.")
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Suggested change
print(f"{number} is {'' if perfect(number) else 'not'} a Perfect Number.")
print(f"{number} is {'' if perfect(number) else 'not '}a Perfect Number.")

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Then it is taking two spaces.

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@cclauss cclauss Jul 28, 2020 •
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Check again.

>>> a = True
>>> print(f"a is {'' if a else 'not '}True.")
a is True.
>>> a = False
>>> print(f"a is {'' if a else 'not '}True.")
a is not True.