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int() function in Python

Python int() function returns an integer from a given object or converts a number in a given base to decimal.

Python int() Syntax : 

int(string, base)

Python int() Parameter : 

Python int() Returns : 

Returns an integer value, which is equivalent of binary string in the given base. 

Python int() Exception and Errors : 

TypeError : Returns TypeError when any data type other than string or integer is passed in its equivalent position.

Python int() method example 

Example 1: Working with int() function in Python




# Python3 program for implementation
# of int() function
num = 13
 
String = '187'
 
# Stores the result value of
# binary "187" and num addition
result_1 = int(String) + num
print("int('187') + 13 = ", result_1, "\n")
 
# Example_2
str = '100'
 
print("int('100') with base 2 = ", int(str, 2))
print("int('100') with base 4 = ", int(str, 4))
print("int('100') with base 8 = ", int(str, 8))
print("int('100') with base 16 = ", int(str, 16)) 





                        







Output : 



int('187') + 13 =  200 

int('100') with base 2 =  4
int('100') with base 4 =  16
int('100') with base 8 =  64
int('100') with base 16 =  256
Example 2: Convert binary string to Python int base














                                    



                                    




                                    




                                    


                                



















# Python3 program for implementation


# of int() function


 


# "111" taken as the binary string



binaryString = "111"



 


# Stores the equivalent decimal


# value of binary "111"



Decimal = int(binaryString, 2)



 



print("Decimal equivalent of binary 111 is", Decimal)



 


# "101" taken as the octal string



octalString = "101"



 


# Stores the equivalent decimal


# value of binary "101"



Octal = int(octalString, 8)



 



print("Decimal equivalent of octal 101 is", Octal)



















                        






                        







Output : 
Decimal equivalent of binary 111 is 7
Decimal equivalent of octal 101 is 65

Example 3: Program to demonstrate the TypeError














                                    



                                    




                                    




                                    


                                



















# Python3 program to demonstrate


# error of int() function


 


 


# when the binary number is not


# stored in as string



binaryString = 111



 


# it returns an error for passing an


# integer in place of string



decimal = int(binaryString, 2)



 



print(decimal)



















                        






                        







Output : 
TypeError: int() can't convert non-string with explicit base
Example 4: Python int() Exception














                                    



                                    




                                    




                                    


                                




















try:




    var = "Geeks"




    print(int(var))




except ValueError as e:




    print(e)



















                        






                        







Output:


invalid literal for int() with base 10: ‘Geeks’


Application : 
It is used in all the standard conversions. For example conversion of binary to decimal, octal to decimal, hexadecimal to decimal.




	

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            Python