stdout - How can work output using python? -

i made script modify text.

but can't make result. below script. begin study python.

i think script didn't work because f = open('find_c_volume_show.txt', 'w')

please me.

import sys itertools import islice  def next_n_lines(file_opened, n):         return [x.strip() x in islice(file_opened, n)]  field_line = 1 num = 0 n = 9 split_line = field_line / n  strings = ("vserver", "volume name", "used size", "available size", "volume size", "aggregate name", "space saved storage efficiency") f = open('find_c_volume_show.txt', 'w') line in open("c_volume_show.txt"):         if any(s in line s in strings):                 field1,field2 = line.strip().split(':')                 field_line += 1                 f.write(field2 + '\n') f.close()  f = open('find_c_volume_show.txt', 'w') f.write("vserver,volume name,aggregate name,volume size,available size,used size,space saved\n") open('find_c_volume_show.txt', 'w') result:         while num < split_line:                 num += 1                 lines = next_n_lines(result, n)                 f.write('{}'.format(','.join(lines)) +'\n' ) f.close() 

below text file. text file has data multi data.

                                   vserver name: fas8040-zzzz                                     volume name: vol0                                  aggregate name: node1_aggr0                                     volume size: 466.6gb                                  available size: 436.2gb                                 filesystem size: 466.6gb                         total user-visible size: 466.6gb                                       used size: 30.40gb                                 used percentage: 6%                                       node name: fas8040-zzzz               space saved storage efficiency: 0b          percentage saved storage efficiency: 0%                    space saved deduplication: 0b                      space saved compression: 0b           percentage space saved compression: 0%                        total physical used size: 22.37gb 

i want result below.

vserver,volume name,aggregate name,volume size,available size,used size,space saved fas8040-zzzz,vol0,node1_aggr0,466.6gb,435.7gb,30.92gb,0b fas8040-yyyy,vol0,node2_aggr0,466.6gb,428.7gb,37.91gb,0b fas8040-xxxx,vol0,node2_aggr0,466.6gb,428.7gb,37.91gb,0b 

the problem each time open file open(filename,'w'), gets erased. can use "temporal" file different name store results of first for loop, or suggest aggregate content of each line list, , write straight away.

additionally, have problems "split_line" value, 0. guess mean len(strings).

here code:

import sys  strings = ("vserver", "volume name", "used size", "available size", "volume size", "aggregate name", "space saved storage efficiency")  open('find_c_volume_show.txt', 'w') f:     f.write("vserver,volume name,aggregate name,volume size,available size,used size,space saved,snapshot,total used size\n")     row = []     line in open("c_volume_show.txt"):         if any(s in line s in strings):             field1,field2 = line.strip().split(':')             row.append(field2)             print(row)         if len(row) == len(strings):             f.write('{}'.format(','.join(row)) +'\n' )             print(row)             row = []