In [1]: import ast
In [2]: import json
In [3]: x = '[ "A","B","C" , " D"]'
In [4]: ast.literal_eval(x)
Out[4]: ['A', 'B', 'C', ' D']
In [5]: json.loads(x)
Out[5]: ['A', 'B', 'C', ' D']
In [6]: [a.strip() for a in json.loads(x)]
Out[6]: ['A', 'B', 'C', 'D']
In [7]: [a.strip() for a in ast.literal_eval(x)]
Out[7]: ['A', 'B', 'C', 'D']
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