CODEWITHSUNDEEP
pythonlistappendstrip
Andrew Martin
Andrew Martin

Reputation: 5761

Splitting a list inside a list

I have a list of this format:

["['05-Aug-13 10:17', '05-Aug-13 10:17', '05-Aug-13 15:17']"]

I am using:

for d in date:
    print d

This produces:

['05-Aug-13 10:17', '05-Aug-13 10:17', '05-Aug-13 15:17']

I then try and add this to a defaultdict, so underneath the print d I write:

myDict[text].append(date)

Later, I try and iterate through this by using:

for text, date in myDict.iteritems():
    for d in date:
        print d, '\n'

But this doesn't work, just producing the format show in the first line of code in this question. The format suggests a list in a list, so I tried using:

for d in date:
    for e in d:
        myDict[text].append(e)

But this included every character of the line, as opposed to each separate date. What am I doing wrong? How can I have a defaultdict with this format

text : ['05-Aug-13 10:17', '06-Aug-13 11:17']

whose values can all be reached?

Upvotes: 0

Views: 821

Answers (2)

colcarroll
colcarroll

Reputation: 3682

As an alternative (though the regular expression might need tuning for your use)

import re
pattern = r"\d{2}-[A-Z][a-z]{2}-\d{1,2} \d{2}:\d{2}"
re.findall(ptrn, your_list[0])

Upvotes: 0

Blender
Blender

Reputation: 298582

Your list contains only one element: the string representation of another list. You will have to parse it into an actual list before treating it like one:

import ast

actual_list = ast.literal_eval(your_list[0])

Upvotes: 3

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