binToDec(n) - IN PYTHON

This function will take a binary number as a parameter and return its decimal equivalent. If the value passed to the function is blank or not numeric, then the following string is returned exactly as shown:

"Invalid entry!"

Output MUST BE as presented in the EXACT format used in the call to the check function.

SAMPLE RUNS

binToDec("01")

will return this integer as shown:

1 binToDec("") or binToDec(g5) will return the following string exactly as shown:

"Invalid entry!"

binToDec("0101") will return the following integer exactly as shown 5