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POPython: Remove Duplicates from Text File
 

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    <p>I am new to python. I want to remove duplicate word</p> <p>and except English word i want to delete all other word and blank line.</p> <p>purely English word only i want to extract.</p> <p>i have some text file which contain such like following</p> <pre><code>aaa bbb aaa223 aaa ccc ddd kei60: sj@6999 jack02 jparkj </code></pre> <p>so after process duplicate i want to get result following</p> <pre><code>aaa bbb ccc ddd jparkj </code></pre> <p>following is what i tried script source.</p> <p>if anyone help me much appreciate! thanks!</p> <pre><code># read a text file, replace multiple words specified in a dictionary # write the modified text back to a file import re def replace_words(text, word_dic): """ take a text and replace words that match a key in a dictionary with the associated value, return the changed text """ rc = re.compile('|'.join(map(re.escape, word_dic))) def translate(match): return word_dic[match.group(0)] return rc.sub(translate, text) def main(): test_file = "prxtest.txt" # read the file fin = open(test_file, "r") str2 = fin.read() fin.close() # the dictionary has target_word:replacement_word pairs word_dic = { '.': '\n', '"': '\n', '&lt;': '\n', '&gt;': '\n', '!': '\n', "'": '\n', '(': '\n', ')': '\n', '[': '\n', ']': '\n', '@': '\n', '#': '\n', '$': '\n', '%': '\n', '^': '\n', "&amp;": '\n', '*': '\n', '_': '\n', '+': '\n', '-': '\n', '=': '\n', '}': '\n', '{': '\n', '"': '\n', ";": '\n', ':': '\n', '?': '\n', ',': '\n', '`': '\n', '~': '\n', '1': '\n', '2': '\n', '3': '\n', '4': '\n', "5": '\n', '6': '\n', '7': '\n', '8': '\n', '9': '\n', '0': '\n', ' ': '\n'} # call the function and get the changed text str3 = replace_words(str2, word_dic) # write changed text back out fout = open("clean.txt", "w") fout.write(str3) fout.close() if __name__ == "__main__": main() </code></pre>
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