Is there a way, in the code below, to access the variable utterances_dict outside of the with-block? The code below obviously returns the error: ValueError: I/O operation on closed file.
from csv import DictReader
utterances_dict = {}
utterance_file = 'toy_utterances.csv'
with open(utterance_file, 'r') as utt_f:
utterances_dict = DictReader(utt_f)
for line in utterances_dict:
print(line)
I am not an expert on DictReader implementation, however their documentation leaves the implementation open to the reader itself parsing the file after construction. Meaning it may be possible that the underlying file has to remain open until you are done using it. In this case, it would be problematic to attempt to use the utterances_dict outside of the with block because the underlying file will be closed by then.
Even if the current implementation of DictReader does in fact parse the whole csv on construction, it doesn't mean their implementation won't change in the future.
DictReader returns a view of the csv file.
Convert the result to a list of dictionaries.
from csv import DictReader
utterances = []
utterance_file = 'toy_utterances.csv'
with open(utterance_file, 'r') as utt_f:
utterances = [dict(row) for row in DictReader(utt_f) ]
for line in utterances:
print(line)
