def myfloat(float_string):
"""It takes a float string ("1,23" or "1,234.567.890") and
converts it to floating point number (1.23 or 1.234567890).
"""
float_string = str(float_string)
errormsg = "ValueError: Input must be decimal or integer string"
try:
if float_string.count(".") == 1 and float_string.count(",") == 0:
return float(float_string)
else:
midle_string = list(float_string)
while midle_string.count(".") != 0:
midle_string.remove(".")
out_string = str.replace("".join(midle_string), ",", ".")
return float(out_string)
except ValueError, error:
print "%s\n%s" %(errormsg, error)
return None
