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annotate g_frequency.py @ 2:a47980ef2b96 draft

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planemo upload for repository https://github.com/Alveo/alveo-galaxy-tools commit b5b26e9118f2ad8af109d606746b39a5588f0511-dirty
author stevecassidy
date Wed, 01 Nov 2017 01:19:55 -0400
parents fb617586f4b2
children 0df72a8ab095
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1 import nltk
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2 from nltk import FreqDist
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3 import argparse
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5 nltk.download('punkt', quiet=True)
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8 def arguments():
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9 parser = argparse.ArgumentParser(description="generate a word frequency table from a text")
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10 parser.add_argument('--input', required=True, action="store", type=str, help="input text file")
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11 parser.add_argument('--output', required=True, action="store", type=str, help="output file path")
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12 return parser.parse_args()
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15 def frequency(in_file, out_file):
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16 """Input: a text file
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17 Output: a table of word frequency with three columns for Word, Count and Percent frequency
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18 """
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19 with open(in_file, 'r') as fd:
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20 text = fd.read()
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22 words = nltk.word_tokenize(text)
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23 fdist = FreqDist(words)
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24 total = float(fdist.N())
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26 with open(out_file, 'w') as output:
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27 output.write("Word\tCount\tPercent\n")
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28 for pair in fdist.items():
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29 output.write("{pair[0]}\t{pair[1]}\t{pc:.2f}\n".format(pair=pair, pc=100 * pair[1] / total))
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32 if __name__ == '__main__':
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33 args = arguments()
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34 frequency(args.input, args.output)