[FIXED] How can i write the below python code in a single list comphrension which also involves a function call?

Issue

states = { 1:['Alabama@ ', 'Georgia!', 'Geor%gia%%', 'georgia', 'FlOrIda', 'southcarolina##', 'West virginia?']}

def remove_punctuations(value):
    return re.sub('[#!?@%]','',value) # remove these punctuations 

for_strings = [str.title, remove_punctuations, str.strip] # perform these  actions on strings 

def clean_strigs(strings,options):
    result = []
    for val in strings:
        #print(val)
        for function in options:
            val = function(val)
        result.append(val)
    return result

filter_dictonary(states[1],for_strings)

output = ['Alabama',
 'Georgia',
 'GeorGia',
 'Georgia',
 'Florida',
 'Southcarolina',
 'West Virginia']

I am trying to write the clean_string function in a with comprehension and also trying to call for_list inside it but I am unable to do so I tried the below code

def filter_column(strings,for_strings):
    result =  [val for value in strings for function  in for_strings for val in function(val) ]
    return result

Can some help me with writing this?

summary: Just write the above clean_strigs in a single list comprehension

Solution

You can use the below solution. It should work.

result = [reduce(lambda a, func: func(a), [value] + for_strings) for value in states[1] ]

The problem with nested for loop in list comprehension is that result of the previous function will not propagate to the next function. That is where reduce comes to help.

Hope this helps.

Answered By - Durai