﻿ Python Math: Convert a binary number to decimal number - w3resource

# Python Math: Convert a binary number to decimal number

## Python Math: Exercise-31 with Solution

Write a Python program to convert a binary number to decimal number.

Sample Solution:-

Python Code:

``````b_num = list(input("Input a binary number: "))
value = 0

for i in range(len(b_num)):
digit = b_num.pop()
if digit == '1':
value = value + pow(2, i)
print("The decimal value of the number is", value)
```
```

Sample Output:

```Input a binary number: 1000001
The decimal value of the number is 65
```

Pictorial Presentation:

Flowchart:

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## Python: Tips of the Day

Getting rid of unwanted characters:

You can get rid of whitespaces or any specific character using strip methods in Python. You can use either plain strip for both sides, lstrip for the left side and rstrip for the right side only.

```str="+++Welcome python+++"
str.strip()

print(str)```

Output:

`+++Welcome python+++`