没有在 python 的新文件中写入 output 的所有行

Question

I am creating a file and I want to write all lines of write_line to my output. With this could I have a new file but only with the last line of write_log not all the lines. I think I should have a for before written log and tell to write all, but i am so new with python and need help. I am getting name / familtname / id by SOAP response. I want to print responses which are in lines, now i just see the last line not all the lines.

timestamp = str(datetime.datetime.now())[:19]
file = open(CreateFile, 'w') 
write_line = str(name).strip() + ';' + familyname.strip() + ';' + str(id).strip() + ';' + timestamp
file.writelines(write_line + '\n') 


def CreateFile():#******************creating output log file*****
    today = str(datetime.date.today()).split('-')
    NowTime = str(datetime.datetime.now())[11:19:]
    Nowtime_split = NowTime.split(':')
    timestamp=Nowtime_split[0]+Nowtime_split[1]+Nowtime_split[2]
    daystamp=today[0]+today[1]+today[2]
    filename = 'log' + '_' + daystamp + '_' + timestamp + '.csv'
    destfile = r'C:\Desktop' + str(filename)
    file = open(destfile, 'w') 
    file.close() 
    return(destfile)
CreateFile=CreateFile()

Answer 1

this is a small case:

import datetime
timestamp = str(datetime.datetime.now())[:19]
file = open('1.txt', 'w') 
for i in range(10):
    write_line ='try'+str(i)
    file.writelines(write_line + '\n') 
file.close()

`

Answer 2

I'm not really sure what you want but I think the problem is because you're using write parameter to open the file and it's always replacing the previous text, so what you can do is replacing write with append(a) :

timestamp = str(datetime.datetime.now())[:19]

with open(CreateFile, 'a') as file:
    write_line = str(name).strip() + ';' + familyname.strip() + ';' +str(id).strip() + ';' + timestamp
    file.write(write_line + '\n') 

I suggest you to use with open... in order to avoid closing the file opened and other futures errors

Answer 3

lines = ['line1', 'line2', ...] # set of lines (list) you want to add in the current timestamp file with open('current_timestampfile.txt', 'w') as f: f.writelines("%s\n" % l for l in lines)