draftcode sensei test

sq.py

# -*- coding:utf-8 -*-
def main(s, a):
    ret = ''
    flg = False
    for i in s:
        if i != a:
            ret += i
            flg = False
        elif not flg:
            ret += i
            flg = True
    return ret

if __name__ == '__main__':
    import sys
    s, a = sys.argv[1:]
    print main(s, a)