Binary to Decimal Converter
Easy
22
88.0% Acceptance
In this lab, your task is to write a Python function named convert_binary
that converts a binary string to its decimal equivalent. The key constraint is to achieve this without using any builtin methods for direct conversion.
Function Requirements
 The function should be named
convert_binary
.  It must accept a binary string (e.g.,
0b1010
) as input.  The function should return the decimal equivalent of the binary string.
Examples

Input: '0b101'
Output: 5 
Input: '0b1111'
Output: 15 
Input: '0b0'
Output: 0
Notes
 Ensure that your function can handle various lengths of binary strings.
 Remember, the use of direct binarytodecimal conversion functions provided by Python is not allowed. You need to implement the conversion logic manually.