- 資料分割
建立 emil.txt
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aa@gmail.com bb@yahoo.com cc@gm.nfu.edu.tw a1@gmail.com a2@gmail.com a3@gmail.com a4@gmail.com |
用來分段@以後的網域
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# 用字串分割取得網域名 from collections import Counter def get_domain(email_address): """split on '@' and return the last piece""" return email_address.lower().split("@")[-1] with open('email.txt', 'r') as f: domain_counts = Counter(get_domain(line.strip()) for line in f if "@" in line) print domain_counts |
先建立輸出 function
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def process(date, symbol, price): print date, symbol, price # tab切割 print "---tab delimited stock prices---" with open('tab_delimited_stock_prices.txt', 'rb') as f: reader = csv.reader(f, delimiter='\t') for row in reader: date = row[0] symbol = row[1] closing_price = float(row[2]) process(date, symbol, closing_price) |
