A Better Way To Rewrite Multiple Appended Replace Methods Using An Input Array Of Strings In Python?

I have a really ugly command where I use many appended 'replace()' methods to replace/substitute/scrub many different strings from an original string. For example: newString = ori

Solution 1:

You have the right idea. Use sequence unpacking to iterate each pair of values:

def replaceAllSubStrings(originalString, replacementArray):
    for in_rep, out_rep in replacementArray:
        originalString = originalString.replace(in_rep, out_rep)
    return originalString

Solution 2:

How about using re?

import re

def make_xlat(*args, **kwds):  
    adict = dict(*args, **kwds)  
    rx = re.compile('|'.join(map(re.escape, adict)))  
    def one_xlat(match):  
        return adict[match.group(0)]  
    def xlat(text):  
        return rx.sub(one_xlat, text)  
    return xlat

replaces = {
    "a": "b",
    "well": "hello"
}

replacer = make_xlat(replaces)
replacer("a well?")
# b hello?

You can add as many items in replaces as you want.