import re


def uncoded(src):
    """Strips out any `# encoding: ???` lines found at the head of the source listing"""
    lines = src.split("\n")
    for i in range(min(len(lines), 2)):
        lines[i] = re.sub(r'#.*coding[=:]\s*([-\w.]+)', '#', lines[i])
    return "\n".join(lines)