writing integer values to a file using out.write()

Question

I am generating some numbers(lets say, num) and writing the numbers to output file using outf.write(num).
But compiler is throwing an error:

Answer 1

Also you can use f-string formatting to write integer to file

For appending use following code, for writing once replace 'a' with 'w'.

for i in s_list:
    with open('path_to_file','a') as file:
        file.write(f'{i}\n')

file.close()

Answer 2

any of these should work

outf.write("%s" % num)

outf.write(str(num))

print >> outf, num

Answer 3

write() only takes a single string argument, so you could do this:

outf.write(str(num))

or

outf.write('{}'.format(num))  # more "modern"
outf.write('%d' % num)        # deprecated mostly

Also note that write will not append a newline to your output so if you need it you'll have to supply it yourself.

Aside:

Using string formatting would give you more control over your output, so for instance you could write (both of these are equivalent):

num = 7
outf.write('{:03d}\n'.format(num))

num = 12
outf.write('%03d\n' % num)          

to get three spaces, with leading zeros for your integer value followed by a newline:

007
012

format() will be around for a long while, so it's worth learning/knowing.

Answer 4

i = Your_int_value

Write bytes value like this for example:

the_file.write(i.to_bytes(2,"little"))

Depend of you int value size and the bit order your prefer