如何使用python将元组列表写入新文件

Question

my_list=[('127.0.0.1', '-', '-', '06/Apr/2017:00:00:00 -0400', 
          'POST /Apps/js_recommanded_jobs.php HTTP/1.1',
          '200', '20546', '-', '-'),
         ('127.0.0.1', '-', '-', '06/Apr/2017:00:00:00 -0400',
         'POST /Apps/auto_suggestion_solr.php HTTP/1.1', 
         '200', '185', '-', '-')]

I need output as like below:

('127.0.0.1', '-', '-', '06/Apr/2017:00:00:00 -0400', 'POST /Apps/js_recommanded_jobs.php HTTP/1.1', '200', '20546', '-', '-'),
('127.0.0.1', '-', '-', '06/Apr/2017:00:00:00 -0400', 'POST /Apps/auto_suggestion_solr.php HTTP/1.1', '200', '185', '-', '-')

Answer 1

If you need to save it as the String, you may do the following.

• Open a file in write mode, named as sample_file.txt
• Map every element of my_list to String

• Writing every tuple separated by delimiter ',\\n' to sample_file.txt

   with open('sample_file.txt', 'wb') as new_file: new_list = map(str, my_list) new_file.write(",\\n".join(new_list)) 

Hope it helps!

Answer 2

1. Open File in write mode.
2. Iterate every row from input list.
3. Write row into file and add new line init.
4. Close file.

Demo:

>>> fp = open("myfile.txt", "w")
>>> for row in my_list:
...     fp.write(str(row) + "\n")
... 
>>> fp.close()
>>> 

Edit 2: Remove unnecessary comma at the end by using map and string join method.

Demo:

>>> fp = open("myfile.txt", "w")
>>> fp.write(",\n".join(map(str, my_list)))
>>> fp.close()

Answer 3

This code works.

with open('out.txt', 'w') as f:
    for line in my_list:
        f.write(str(line)+'\n')

Answer 4

This will do the job.

with open('mylist.txt', 'w') as f:
    my_list = [('a','b'),('b','c')]
    listtocopy = ',\n'.join(str(x) for x in my_list)
    f.write(listtocopy)
    f.close()