Created
April 20, 2014 19:19
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Kaggle: Acquire Valued Shoppers Challenge: reducing the dataset from 22GB to 1GB
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| import pandas | |
| df = pandas.read_csv('offers.csv.gz', compression='gzip') | |
| categories = df.category.tolist() | |
| subset = open('subset.csv', 'w') | |
| fl = open('transactions.csv', 'r') | |
| fl.readline() | |
| while True: | |
| l = fl.readline() | |
| if l == '': | |
| break | |
| if numpy.int64(l.split(',')[3]) in categories: | |
| subset.write(l) |
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