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# Input a number in binary format in Python

Python | Binary Input: In this tutorial, we will learn how to Input a number in binary format in Python programming language? Submitted by IncludeHelp Last updated : December 17, 2023

## Input a number in binary format

To input a number in binary format, use the input() method inside the int() method by passing the base value 2 which is used for converting binary numbers to decimals. This technique allows one to take input an input in binary format and then convert it into decimal format.

## Syntax

Below is the syntax to take input in binary format:

```variable = int(input("Message"), 2)
```

## Python program to input a number in binary format

In this example, we are going to implement the program – that will take input the number as an binary number and printing it in the decimal 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...
```

## Converting a decimal input to binary format

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
```

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