[Tutor] Sentiment analysis read from a file

[Alan Gauld]

On 28/03/18 11:07, theano orf wrote:
> I am new in python and I am having problems of how to read a txt file and
> insert the data in a list, 

Just a quick response, but your data is more than a text file its a CSV
file so the rules change slightly. Especially since you are using the csv
module.

Your data file is not a CSV file - it is just space separated and the
string is not quoted so the CSV default mode of operation won;t
work on this data as you seem to expect it to,. You will need to
specify the separator (as what? A space wiill split on each word...)
CSV might not be the best option here a simple string split combined
with slicing might be better.

> with open("training.txt", 'r') as file:

The CSV module prefers binary files so open it with mode 'rb' not 'r'

> reviews = list(csv.reader(file))

Try printing the first 2 lines of reviews to check what you have.
I suspect it's not what you think.

>    positive_review = [r[1] for r in reviews if r[0] == str(1)]

str(1) is just '1' so you might as well just use that.

> after the print I only take an empty array. Why is this happening? I am
> attaching also the training.txt file

See the comments above about your data format.

-- 
Alan G
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