Convert k to Integer thousand Python.

strToInt.py

def convert_str_to_number(x):
    total_stars = 0
    num_map = {'K':1000, 'M':1000000, 'B':1000000000}
    if x.isdigit():
        total_stars = int(x)
    else:
        if len(x) > 1:
            total_stars = float(x[:-1]) * num_map.get(x[-1].upper(), 1)
    return int(total_stars)

how can i convert thousand into million

>>> def str_to_number(s: str) -> int:
...     import re
...     units = ["k", "m", "g"]
...     rv, unit, *_ = re.findall(r'\d+|[a-z]', s, re.I) + [""]
...     return int(rv) * (1 << abs(~units.index(unit.lower())) * 10 if unit else 1)
... 
>>> str_to_number(' 128')
128
>>> str_to_number(' 128M ')
134217728
>>> str_to_number(' 128 Mebybites ')
134217728