Binary to Text (ASCII) Conversion

DESCRIPTION:

Write a function that takes in a binary string and returns the equivalent decoded text (the text is ASCII encoded).

Each 8 bits on the binary string represent 1 character on the ASCII table.

The input string will always be a valid binary string.

Characters can be in the range from "00000000" to "11111111" (inclusive)

Note: In the case of an empty binary string your function should return an empty string.

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def binary_to_string(binary):
    alist=[]
    ans=""
    for i in range(int(len(binary)/8)):
        ans+=chr(int(binary[8*i:8*(i+1)],2))
    return ans