Input a number in binary format in Python

Python | Binary Input: Here, we are going to learn how to Input a number in binary format in Python programming language?
Submitted by IncludeHelp, on April 27, 2020

Syntax to convert binary value to an integer (decimal format),

    int(bin_value, 2)

Here,

  • bin_value should contain the valid binary value
  • 2 is the base value of the binary number system

Note: bin_value must contain only binary digits (0 and 1), if it contains other than these digits a "ValueError" will return.

Program to convert given binary value to integer (decimal)

# function to convert given binary Value
# to an integer (decimal number)
def BinToDec(value):
  try:
    return int(value, 2)
  except ValueError:
    return "Invalid binary Value"

# Main code
input1 = "11110000"
input2 = "10101010"
input3 = "11111111"
input4 = "000000"
input5 = "012"

print(input1, "as decimal: ", BinToDec(input1))
print(input2, "as decimal: ", BinToDec(input2))
print(input3, "as decimal: ", BinToDec(input3))
print(input4, "as decimal: ", BinToDec(input4))
print(input5, "as decimal: ", BinToDec(input5))

Output

11110000 as decimal:  240
10101010 as decimal:  170
11111111 as decimal:  255
000000 as decimal:  0
012 as decimal:  Invalid binary Value

Now, we are going to implement the program – that will take input the number as an binary number and printing it in the decimal format.

Program to input a number in binary format

# input number in binary format and 
# converting it into decimal format

try:
  num = int(input("Input binary value: "), 2)
  print("num (decimal format):", num)
  print("num (binary format):", bin(num))  
except ValueError:
  print("Please input only binary value...")

Output

RUN 1:
Input binary value: 11110000
num (decimal format): 240
num (binary format): 0b11110000

RUN 2:
Input binary value: 101010101010
num (decimal format): 2730
num (binary format): 0b101010101010

RUN 3:
Input binary value: 1111111111111111
num (decimal format): 65535
num (binary format): 0b1111111111111111

RUN 4:
Input binary value: 0000000
num (decimal format): 0
num (binary format): 0b0

RUN 5:
Input binary value: 012
Please input only binary value...





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