#!/usr/bin/python3

import argparse as ap

par = ap.ArgumentParser()
par.add_argument('-a', type=float)

cases =  "1 -1 1.0 -1.0 1. -1. "

cases += "1e2  -1e2 "
cases += "1e+2 -1e+2 "
cases += "1e-2 -1e-2 "
cases += "1E2  -1E2 "
cases += "1E+2 -1E+2 "
cases += "1E-2 -1E-2 "

cases += "1.0e2  -1.0e2 "
cases += "1.0e+2 -1.0e+2 "
cases += "1.0e-2 -1.0e-2 "
cases += "1.0E2  -1.0E2 "
cases += "1.0E+2 -1.0E+2 "
cases += "1.0E-2 -1.0E-2 "

cases += "1.e2  -1.e2 "
cases += "1.e+2 -1.e+2 "
cases += "1.e-2 -1.e-2 "
cases += "1.E2  -1.E2 "
cases += "1.E+2 -1.E+2 "
cases += "1.E-2 -1.E-2"

ntests = len(cases.split())
print (ntests)
for i, c in enumerate(cases.split()):
    print (i, c)
    n = float(c)
    cc = "-a " + c
    args = par.parse_args(cc.split())
    if n != args.a:
        raise ValueError