CODEWITHSUNDEEP
pythonlistunicode
Sapling
Sapling

Reputation: 533

How to combine unicode of string and list to a python list

I have these unicodes:

uni_list = u'["","aa","bb","cc"]

I also have the following unicodes:

uni_str = u'dd'

I need to combine them together to a list, and get rid of null ones, the desired result will be like:

["aa","bb","cc","dd"]

But I don't know when it will be a uni_list, or a uni_str as i am reading a json file which split these results, is there a unified solution to convert them and combine them to a python list or set?

I tried to use ast.literal_eval, it seems only handle uni_list, but give me error of "malformed string" when it is a uni_str.

enter image description here

Many Thanks!

Upvotes: 1

Views: 756

Answers (2)

RomanPerekhrest
RomanPerekhrest

Reputation: 92854

Alternative solution using re.match and re.findall functions:

result = []

def getValues(s):
    global result
    // check if input string contains list representation
    is_list = re.match(r'^\[[^][]+\]$', s, re.UNICODE)

    if is_list:
        result = result + re.findall(r'\"([^",]+)\"', s, re.UNICODE)
    else:
        result.append(s)


getValues(u'["","aa","bb","cc"]')
getValues(u'dd')

print(result)

The output:

['aa', 'bb', 'cc', 'dd']

Upvotes: 1

Moinuddin Quadri
Moinuddin Quadri

Reputation: 48092

You may use ast.literal_eval to convert your string to list as:

>>> import ast
>>> my_unicode = u'["","aa","bb","cc"]'

# convert string to list
>>> my_list = ast.literal_eval(my_unicode)
>>> my_list
['', 'aa', 'bb', 'cc']

# Filter empty string from list
>>> new_list = [i for i in my_list if i]
>>> new_list
['aa', 'bb', 'cc']

# append `"dd"` string to the list
>>> new_list.append("dd")  # OR, `str(u"dd")` if `"dd"` is unicode string
>>> new_list
['aa', 'bb', 'cc', 'dd']

Upvotes: 4

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