generate file with correct output python?

Question

I have a python code which I am using to generate the batch file and the input is coming from txt file

def create_bat_file(lp=None):
  with open(r"test.txt", "r+") as file:
    currentDir = os.path.abspath(".")
    data = file.readlines()
    for line in data:
      a = line.split('=')
      b = a[0]
      f = a[1]
      bk = a[2]
      reldat = a[3]
      f= open("{}.bat".format(f),"w+")
      f.write("@ECHO OFF\n")
      f.write("SET lp="'"{}"'"\n".format(lp))
      if b == "RB":
          f.write("SET reldat="'"{}"'"".format(reldat))
      if b == "RB":
        f.write("{}\\a.exe POST -d "'"best.variable.lp=lp"'"" " " "{}".format(currentDir,bk))
      else:
        f.write("{}\\a.exe POST -d "'"best.variable.cp=cp"'"" " " "{}".format(currentDir,bk))
      f.close()

test.txt file is having below input

CL=TEST14=https://test.com.org/latst/queue/TEST-R=2020-12-22

Below is the output

@ECHO OFF
SET lp="test"
SET reldate="2020-12-22
"C:\a.exe POST -d "best.variable.cp"=cp https://test.com.org/rest/api/latest/queue/TEST-RR

Issue is when it creates the batch file (TEST14.bat)

Wrong:

SET reldate="2020-12-22
    "C:\a.exe POST -d "best.variable.cp"=cp https://test.com.org/rest/api/latest/queue/TEST-RR

in output the end double quote comes to the next line it should be always like

Correct:

SET reldate="2020-12-22"
C:\a.exe POST -d "best.variable.cp"=cp https://test.com.org/rest/api/latest/queue/TEST-RR

araraonline · Accepted Answer · 2019-06-02 01:26:19Z

The last character of line is the newline character \n. The last character of reldat is also the newline character. Therefore, on the line:

f.write("SET reldat="'"{}"'"".format(reldat))

You end up adding a \n before the last ".

To fix, you can strip the \n from line and add the missing one where it is needed:

def create_bat_file(lp=None):
  with open(r"test.txt", "r+") as file:
    currentDir = os.path.abspath(".")
    data = file.readlines()
    for line in data:
      line = line[:-1]  #### STRIP NEWLINE CHARACTER ####
      a = line.split('=')
      b = a[0]
      f = a[1]
      bk = a[2]
      reldat = a[3]
      f= open("{}.bat".format(f),"w+")
      f.write("@ECHO OFF\n")
      f.write("SET lp="'"{}"'"\n".format(lp))
      if b == "RB":
          f.write('SET reldat="{}"\n'.format(reldat))  #### ADD MISSING NEWLINE ####
      if b == "RB":
        f.write("{}\\a.exe POST -d "'"best.variable.lp=lp"'"" " " "{}".format(currentDir,bk))
      else:
        f.write("{}\\a.exe POST -d "'"best.variable.cp=cp"'"" " " "{}".format(currentDir,bk))
      f.close()

I also took the freedom to use single quotes around the string, it looks much better!

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