How to change 0.9M to float number Python3?

Question

Is there a Python3 library that convert abrriviation of string number as : 10K, 0.2M, 32B etc. to float numbers?

exmple: 10K => 10000 0.9M=> 9000000 an so on.

If there isn't a library what is the efficient way to convernt those numbers?

**I tried to split the number from the letter but it only works with int and not double.

test_str = "9M"
temp = re.compile("([0-9]+)([a-zA-Z]+)")
res = temp.match(test_str).groups()

More info: I get the number from the client that way and can't change it. It needed to be float for late calculations

Thanks !

Answer 1

Try

>>> import re
>>>
>>> fact_dic = {'': 1, 'K': 1000, 'M': 1000000}
>>>
>>> def GetFloatFromFactor( input ):
...     m = re.search( r"^(\d+(?:\.\d*)?|\.\d+)([KM]?)$", input)
...     if m != None:
...         fval = float( m.group(1) ) * fact_dic[ m.group(2) ]
...         return fval
...     else:
...         return "no match"
...
>>> GetFloatFromFactor( '3K' )
3000.0
>>> GetFloatFromFactor( '12.4M' )
12400000.0
>>> GetFloatFromFactor( '098.281' )
98.281