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Python Discussion Thread
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Views: 6806

Sep 19th, 2008

How to get rid of newline char

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Hi,

Below is my test code, i have a list of names in a file, i read the names and i have to insert them as menu options in the menubar. Since its a dynamic menu and people can add new menu's it has to be read from a file everytime its loaded. Problem is that its appending an extra character after everyname in the menu, something line '[]'(check the attached screen shot) which i assume is the newline char, since i'm inserting that too... How can i get rid of that, any suggestions? i tried reading and writing the file in binary mode but makes no difference.

python Syntax (Toggle Plain Text)
from Tkinter import *
 
fileObj = open("c:/test","w")
fileObj.write("rajat")
fileObj.write("\n")
fileObj.write("prasun")
fileObj.close()
 
file1 = open("c:/test","r")
lines = file1.readlines()
file1.close()
 
root = Tk()
menubar = Menu(root)
filemenu = Menu(menubar)
menubar.add_cascade(label="Names",menu=filemenu)
 
for line in lines:
    filemenu.add_cascade(label=line)
 
root.config(menu=menubar)
root.mainloop()
from Tkinter import *

fileObj = open("c:/test","w")
fileObj.write("rajat")
fileObj.write("\n")
fileObj.write("prasun")
fileObj.close()

file1 = open("c:/test","r")
lines = file1.readlines()
file1.close()

root = Tk()
menubar = Menu(root)
filemenu = Menu(menubar)
menubar.add_cascade(label="Names",menu=filemenu)

for line in lines:
    filemenu.add_cascade(label=line)

root.config(menu=menubar)
root.mainloop()

Attached Images

tk.bmp (39.5 KB, 55 views)

Last edited by Agni; Sep 19th, 2008 at 6:56 am.

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Agni

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Sep 19th, 2008

Re: How to get rid of newline char

Use string method strip() to remove newline characters.

Python Syntax (Toggle Plain Text)
for line in lines:
    filemenu.add_cascade(label=line.strip())
for line in lines:
    filemenu.add_cascade(label=line.strip())

solsteel

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Sep 19th, 2008

Re: How to get rid of newline char

simple and exact ... worked perfectly... Thanks a lot.

Agni

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