Python文件读写

虽然这很容易做到,但使用 csv 单元

>>> import csv
>>> reader = csv.reader(open('C:/www/stackoverflow.txt'), delimiter='\t')
>>> for row in reader:
...     print row
...
['1', 'John Smith', 'Developer', 'http://twiiter.com/johns', 'Chicago, IL']
['2', 'John Doe', 'Developer', 'http://whatever.com', 'Tallahassee, FL']

了解列的确切数量有助于自行记录代码:

fwrite = open("d:/icm_db/wp_sql/wp.users.sql","w")

for line in open("d:/icm_db/users.txt"):
  name, title, login, location = line.strip().split("\t")

  # Double up on those single quotes to avoid nasty SQL!
  safe_name = name.replace("'","''")
  safe_login = name.replace("'","''")

  # ID field is primary key and will auto-increment
  fwrite.write( "INSERT INTO `wp_users` (`user_login`, `user_name`) " )
  fwrite.write( "VALUES ('%s','%s');\n" % (safe_name,safe_login) )

Python标准库有一个用于 CSV (comma separated value) file reading and writing 可以使其在选项卡分隔的文件(如您的文件)上工作。这项任务可能做得太过火了。

您可能想要的是这样的: data=line.split("\t")
它将为您提供一个很好的序列对象。
print line; )

正如戴夫指出的,这可能会留下一条新线。在拆分之前在线调用strip(),如下所示: line.strip().split("\t")

fwrite = open('/home/lyrae/Desktop/E/wp.users.sql','a')
fread = open('/home/lyrae/Desktop/E/users.txt','r')

for line in fread:
    line = line.split("\t")
    fwrite.write("insert into wp_users ( ID, user_login, user_name ) values (%s, '%s', '%s')\n" % (line[0], line[1], line[2]))

fread.close()
fwrite.close()

假设users.txt为:

1   John Smith  Developer   http://twiiter.com/johns    Chicago, IL
2   Billy bob   Developer   http://twiiter.com/johns    Chicago, IL
3   John Smith  Developer   http://twiiter.com/johns    Chicago, IL

insert into wp_users ( ID, user_login, user_name ) values (1, 'John Smith', 'Developer')
insert into wp_users ( ID, user_login, user_name ) values (2, 'Billy bob', 'Developer')
insert into wp_users ( ID, user_login, user_name ) values (3, 'John Smith', 'Developer')

假设只有1个选项卡分隔id、名称和位置