去除python中的引号

Question

I used python to import txt data as list. As a result, there are double quotes on the items in the list which i do not want. I want to remove them but I'm currently having some difficulties. I would be glad if someone can kindly help me with this issue.

The list in python is of this nature:

lst = ["'BEN','JIM'", "'GIN','ANN'"]

I want to have the double quotes removed so I can get this list:

lst = ['BEN','JIM', 'GIN','ANN']

I tried this lines of code but to no avail:

lst = ["'BEN','JIM'", "'GIN','ANN'"]
lst = [x.strip("'") for x in lst] 
lst

and the result is not what im expecting:

["BEN','JIM", "GIN','ANN"]

Again, I would be grateful for your help.

Answer 1

You have confused the display representation of an item as being equivalent to its value. Look at what you have: a list of two elements:

["'BEN','JIM'", 
 "'GIN','ANN'"]

You want to obtain a list of four elements:

['BEN',
'JIM',
'GIN',
'ANN']

You cannot do this by simple character manipulation: the operations you tried do not change the quantity of elements.

Instead, you have to process the elements you have, splitting 2-for-1. I'll keep the Python technology low ...

new_lst = []
for two_name in lst:
    name_pair = two_name.split(',')
    new_lst.extend(name_pair)

Output:

["'BEN'", "'JIM'", "'GIN'", "'ANN'"]

Now you can use your previous technique to remove the single-quotes, leaving you with the four, 3-letter names you wanted.

Does that solve your problem?

Answer 2

Use the replace() string function to get rid of the single quotes, and then split on commas.

lst = ["'BEN','JIM'", "'GIN','ANN'"]
newlst = []
for pair in lst:
    for name in pair.replace("'", "").split(","):
        newlst.append(name)

Answer 3

The data looks similar to a CSV file where the individual cells are quoted. If it looks like a duck... use a reader to strip them for you. This is a nested list comprehension to first build rows from the the list and then to flatten them to a single list.

>>> import csv
>>> lst = ["'BEN','JIM'", "'GIN','ANN'"]
>>> [cell for row in csv.reader(lst, quotechar="'") for cell in row]
['BEN', 'JIM', 'GIN', 'ANN']

Answer 4

lst = ["'BEN','JIM'", "'GIN','ANN'"]
lst = "".join(lst)
print(lst)

Output:

'BEN','JIM''GIN','ANN'

Answer 5

You can do thi with list comprehension on two lines:

input:

lst = ["'BEN','JIM'", "'GIN','ANN'"]

---

lst1 = [x.replace("'", "").split(',') for x in lst]
lst2 = [z for y in lst1 for z in y]

or on one line

lst2 = [z for y in [x.replace("'", "").split(',') for x in lst] for z in y]

output:

['BEN', 'JIM', 'GIN', 'ANN']