How to reject decimal numbers in Python?

[The Recruiter]

I have searched a lot but not able to find the appropriate answer. So lastly hoping some help from you guys.!! I just want to ask that Is there a way to stop users inputting decimal numbers in python? I am having the following code :
user = input("Please input a number")
when this is popped to user I want that user should not enter the decimal numbers. They should able to enter only the whole numbers. Please help me soon.!! Also does anyone know the program to convert Decimal to Binary??

[Reegan]

According to me you can use the 'If statement' to say if its a decimal print a message to say whole numbers only. That means when the user would input the decimal numbers then there would be a message generated to the user to enter the Whole numbers only. You have to put that into the loop, and it would be somewhat like this :
Loop -> Input -> Is Input Integer?
-(yes)-> break loop
-(no)-> go through loop again
Hope that you got the solution that you needed.

[opaper]

I would like to give an another example. Lets say your input is a floating point number x. The number will get rounded from z to n decimal places, if you use the built in function round(z,n) in python. If you omit the n, then it assumes it as 0. So if the user inputs the x which is an integer, then x will be equal to round(x). If x is not an integer, then x will not be equal to round(x).
For Example :

x = 3
round(x) = 3
x == round(x)

x = 5.2
round(x) = 5
x != round(x)

I think that from this you should able to write the code correctly.

[MindSpace]

I think that you can use the following code :

number = raw_input('enter something: ')

if '.' in number:
print "NO DECIMALS ALLOWED"

else:
print number
using this program to can get the desired output.

[Katty]

I think that this code will work for converting the Decimal to Binary :

def Denary2Binary(n):
'''convert denary integer n to binary string bStr'''
bStr = ''
if n < 0: raise ValueError, "must be a positive integer"
if n == 0: return '0'

while n > 0:

bStr = str(n % 2) + bStr
n = n >> 1
return bStr
def int2bin(n, count=24):
"""returns the binary of integer n, using count number of digits"""
return "".join([str((n >> y) & 1) for y in range(count-1, -1, -1)])

[Zecho]

I think that code mentioned by the 'Katty' has disadvantage. The coding will gets executed when used as a standalone program, but not as an imported module. If you save this module as trialpro.py and and use it in another program. Now when you try to import the trialpro.py__name__namespace would now be a trialpro.py and the test will be ignored. Hope that I will find some way for this drawback.