Q:

How to extract the first numbers in a string - Python

How do I remove all the numbers before the first letter in a string? For example,
myString = "32cl2"

I want it to become:
"cl2"

I need it to work for any length of number, so 2h2 should become h2, 4563nh3 becomes nh3 etc. 
EDIT:
This has numbers without spaces between so it is not the same as the other question and it is specifically the first numbers, not all of the numbers.

A:

If you were to solve it without regular expressions, you could have used itertools.dropwhile():
>>> from itertools import dropwhile
>>>
>>> ''.join(dropwhile(str.isdigit, "32cl2"))
'cl2'
>>> ''.join(dropwhile(str.isdigit, "4563nh3"))
'nh3'

Or, using re.sub(), replacing one or more digits at the beginning of a string:
>>> import re
>>> re.sub(r"^\d+", "", "32cl2")
'cl2'
>>> re.sub(r"^\d+", "", "4563nh3")
'nh3'

