def p2f_simple(s):
    return float(s.strip("%")) / 100
 
def p2f_complex(s):
    s = s.rstrip("%")
    if "." not in s:
        return int(s) / 100
    if s.startswith("-"):
        return -p2f_complex(s.lstrip("-"))
    i, j = s.split(".", 2)
    i = int(i)
    s = "0.00" + j if i == 0 else str(i / 100) + j
    return float(s)
 
tests = {
    "150%"              : 1.5,
    "100%"              : 1,
    "99%"               : 0.99,
    "99.999%"           : 0.99999,
    "99.5%"             : 0.995,
    "95%"               : 0.95,
    "90%"               : 0.9,
    "50%"               : 0.5,
    "66.666%"           : 0.66666,
    "42%"               : 0.42,
    "20%"               : 0.2,
    "10%"               : 0.1,
    "3.141592653589793%": 0.03141592653589793,
    "1%"                : 0.01,
    "0.1%"              : 0.001,
    "0.01%"             : 0.0001,
    "0%"                : 0,
}
tests = sorted(tests.items(), key=lambda x: -x[1])
 
for s, expected in tests:
    pps = p2f_simple(s)
    if expected == pps:
        print('p2f_simple("' + s + '") correctly returned', pps)
    else:
        print('p2f_simple("' + s + '") returned', pps, 'but we expected', expected)
 
    ppc = p2f_complex(s)
    if expected == ppc:
        print('p2f_complex("' + s + '") correctly returned', ppc)
    else:
        print('p2f_complex("' + s + '") returned', ppc, 'but we expected', expected)

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