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POPrint the count of lines written into CSV file
 

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  1. POPrint the count of lines written into CSV file
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    <p>[Python3] I have a script that reads a (long) CSV file, containing email addresses and corresponding country codes, and splits these out by country code. This is going fine, but I want the script to print out the number of lines (i.e. emails) (it has written) as per each file.</p> <p>Also, I'm very new to programming and Python so I would be very glad to receive any optimization suggestions or other tips in general!</p> <p>Input file looks something like this:</p> <pre><code>12345@12345.com us xyz@xyz.com gb aasdj@ajsdf.com fr askdl@kjasdf.com de sdlfj@aejf.com nl ... ... </code></pre> <p>The output should look something like this:</p> <pre><code>Done! us: 20000 gb: 20000 de: 10000 fr: 10000 nl: 10000 ... </code></pre> <p>My code is the following:</p> <pre><code>import csv, datetime from collections import defaultdict """ Script splits a (long) list of email addresses with associated country codes by country codes. Input file should have only two columns of data - ideally. """ # Declaring variables emails = defaultdict(list) in_file = "test.tsv" # Write filename here. filename = in_file.split(".") """Checks if file is comma or tab separated and sets delimiter variable.""" if filename[1] == "csv": delimiter = ',' elif filename[1] == "tsv": delimiter = '\t' """Reads csv/tsv file and cleans email addresses.""" with open(in_file, 'r') as f: reader = csv.reader(f, delimiter=delimiter) for row in reader: # Gets rid of empty rows if row: # Gets rid of non-emails if '@' in row[0]: # Strips the emails from whitespace and appends to the 'emails' list # Also now 'cc' is in the first position [0] and email in the second [1] emails[row[1].strip()].append(row[0].strip()+'\n') """"Outputs the emails by cc and names the file.""" for key, value in emails.items(): # Key is 'cc' and value is 'email' # File is named by "today's date-original file's name-cc" with open('{0:%Y%m%d}-{1}-{2}.csv'.format(datetime.datetime.now(), filename[0], key), 'w') as f: f.writelines(value) </code></pre>
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    1. USMatthijs
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    1. COCan you post a short example of the `emails` dict? Say 5 or 10 emails?
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      1. USthegrinner
    2. COIs this not just `len(value)`
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      1. USjamylak
    3. CO@jamylak i think op wants a seperate count for each country code which would involve looking at the adresses i guess.
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      1. USpypat
 

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