Wsrtjtyk

I have the code below:

data=[(24, 'Sale', 0, 15), (16, 'Buy', 18, 0)]

with open('txt_file.txt', 'w') as x:

    for sub_list in data:

        for item in sub_list:  #Since attempt to write whole giv error

            print(item)      

            x.write(str(item) + '   ')

How can I get to extract one list from 'data', which is a list of lists, write it in one line and move to next line before extracting the other list? I need the text file to look like:

24 Sale 0 15

16 Buy 18 0

I think you could just write a newline just after exiting the inner loop, and your code would work (even if the last item would have spaces after it).

for item in sub_list:  #Since attempt to write whole giv error

    x.write(str(item) + '   ')

x.write('n')

However, built-in csv module handles list of strings, integers, whatever, automatically (also handles strings with spaces in it by quoting them):

data=[(24, 'Sale', 0, 15), (16, 'Buy', 18, 0)]

with open('txt_file.txt', 'w', newline="") as x:

   csv.writer(x,delimiter=" ").writerows(data)

the writerows method is able to write a collection of tuples or lists. Exactly what you need. The only difference is that csv cannot separate the data by more than one char (multi-char separators aren't allowed). You'll have to make do with 1 space.

The most concise way to do this would be the following:

with open('txt_file.txt', 'w') as x:

    x.write('n'.join(' '.join(map(str, row)) for row in data))

try this:

with open('txt_file.txt','wt') as f:

    [f.write(' '.join([str(it) for it in item])+'n') for item in data]

Mine approach is based on your idea with a bit of adjustments (1. use format template so you can adjust final view and 2) using unpacking.) Final code looks like, apart make proper format template:

data=[(24, 'Sale', 0, 15), (16, 'Buy', 18, 0)]

FMT = '{}   {}   {}'



with open('txt_file.txt', 'w') as x:

    for item in data:

        record = FMT.format(*item)

        print(record)

        x.write(record + 'n')

"n" does the trick:

data=[(24, 'Sale', 0, 15), (16, 'Buy', 18, 0)]

with open('txt_file.txt', 'w') as x:

    for sub_list in data:

        for item in sub_list:  #Since attempt to write whole giv error

            print(item)      

            x.write(str(item) + '   ')

        x.write("n")