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+--- Thread: cant save data to text file. (/thread-5891.html)
cant save data to text file. - darktitan - Oct-26-2017
hi
Im trying to save all the generated numbers from my generator to a text file with file save dialog but it only saves the last line and the text file does not have *.txt for some reason. Could any one help me out?
from tkinter import *
import tkinter as tk
from tkinter import filedialog
import sys, os
import io
class StatusBar(Frame):
def __init__(self, master):
Frame.__init__(self, master)
#self.file = io.open('märkning.txt', 'wt', encoding='utf8')
def funktion(self):
value1 = (a1.get())
value2 = (a2.get())
value3 = (a3.get())
#value4 = (a4.get())
for parts in range(value3):
print('{}-{}-{}-{}\n'.format(value1, value2, parts+1, parts+1))
#self.file.writelines('{}-{}-{}-{}\n'.format(value1, value2, parts+1, parts+1))
a4.set('{}-{}-{}-{}\n'.format(value1, value2, parts+1, parts+1))
#Vad ska programet göra när den stängs av.
def On_exit(self):
try:
#stänger ner data filer och sparar data.
self.file.close()
#stäng av prgramet
self.master.destroy()
except:
self.master.destroy()
#Koden är en del av entry's endast nummer restriktion
def validate(self, action, index, value_if_allowed,
prior_value, text, validation_type, trigger_type, widget_name):
if text in '0123456789.-+':
try:
float(value_if_allowed)
return True
except ValueError:
return False
else:
return False
def file_save(self):
#file = filedialog.asksaveasfilename(initialdir = "/",title = "Select file",filetypes = (("txt files","*.txt"),("all files","*.*")))
file = filedialog.asksaveasfile(mode='wt', filetypes = (("txt files","*.txt"),("all files","*.*")))
value4 = (a4.get())
if file:
file.writelines(value4)
file.close()
if __name__ == "__main__":
root = tk.Tk()
status = StatusBar(root)
root.protocol("WM_DELETE_WINDOW", status.On_exit)
Frame = tk.Frame(root, borderwidth=10)
Frame.grid(column=0, row=0, sticky=(N, W, E, S))
#Koden är en del av entry's endast nummer restriktion
vcmd = (Frame.register(status.validate),
'%d', '%i', '%P', '%s', '%S', '%v', '%V', '%W')
a1 = StringVar()
a2 = StringVar()
a3 = IntVar()
a4 = StringVar()
text1 = Label(Frame, text="Kabelnamn:", font=("Helvetica", 12, "bold")).grid(column=0, row=0, sticky=(W), columnspan=2)
Kabelnamn_entry = tk.Entry(Frame, font=('Helvetica', 12, 'bold'), textvariable=a1)
Kabelnamn_entry.grid(column=0, row=1, sticky=(W, E), columnspan=2)
Kabelnamn_entry.delete(0, END)
text2 = Label(Frame, text="Kabelnummer:", font=("Helvetica", 12, "bold")).grid(column=0, row=2, sticky=(W), columnspan=2)
Kabelnummer_entry = tk.Entry(Frame, font=('Helvetica', 12, 'bold'), textvariable=a2)
Kabelnummer_entry.grid(column=0, row=3, sticky=(W, E), columnspan=2)
Kabelnummer_entry.delete(0, END)
text3 = Label(Frame, text="Parter:", font=("Helvetica", 12, "bold")).grid(column=0, row=4, sticky=(W), columnspan=2)
part_entry = tk.Entry(Frame, font=('Helvetica', 12, 'bold'), textvariable=a3, validate = 'key', validatecommand = vcmd)
part_entry.grid(column=0, row=5, sticky=(W, E), columnspan=2)
part_entry.delete(0, END)
button1 = tk.Button(Frame, text="Make", command=status.funktion, width = 16)
button1.grid(column=0, row=6, sticky=(W, E), columnspan=4)
button2 = tk.Button(Frame, text="Spara", command=status.file_save, width = 16)
button2.grid(column=0, row=7, sticky=(W, E), columnspan=4)
root.update()
root.resizable(width=False, height=False)
root.mainloop()
RE: cant save data to text file. - Larz60+ - Oct-26-2017
shouldn't the mode be plain 'w', rather than 'wt'? (line 48)
RE: cant save data to text file. - darktitan - Oct-27-2017
(Oct-26-2017, 09:30 PM)Larz60+ Wrote: shouldn't the mode be plain 'w', rather than 'wt'? (line 48)
Well thats not the problem w and wt is alost the same thing here. My problem is if i generete 10 lines of data and save it only the 10th or last line is saved to the file and the file does not get the *.txt
The t indicates text mode, meaning that \n characters will be translated to the host OS line endings when writing to a file, and back again when reading. The flag is basically just noise, since text mode is the default.
RE: cant save data to text file. - Larz60+ - Oct-27-2017
'wt' was foreign to me, I had at some point assumed that the file modes
were the same as 'C' file modes, but then saw the python 'wt' mode after my post.
Learned something new!
That being the case, change writelines to write, writelines expects a list of strings,
while write expects a single string.
RE: cant save data to text file. - darktitan - Oct-27-2017
(Oct-27-2017, 08:26 AM)Larz60+ Wrote: 'wt' was foreign to me, I had at some point assumed that the file modes
were the same as 'C' file modes, but then saw the python 'wt' mode after my post.
Learned something new!
That being the case, change writelines to write, writelines expects a list of strings,
while write expects a single string.
It did not help it still writes the last line to the text file.
RE: cant save data to text file. - wavic - Oct-27-2017
'wt' ?
RE: cant save data to text file. - Larz60+ - Oct-27-2017
wavic it's two vaniyas!, got me too, but it's valid!
RE: cant save data to text file. - darktitan - Oct-27-2017
(Oct-27-2017, 04:33 PM)Larz60+ Wrote: wavic it's two vaniyas!, got me too, but it's valid!
i am still only saving the last line that the generator generate to the text file while i want to save all lines. i cant figure out why.
for examle if i generate
Quote:kp1234-w3-1-1
kp1234-w3-2-2
kp1234-w3-3-3
kp1234-w3-4-4
kp1234-w3-5-5
kp1234-w3-6-6
kp1234-w3-7-7
kp1234-w3-8-8
kp1234-w3-9-9
kp1234-w3-10-10
Quote:only this kp1234-w3-10-10 line gets saved for some reason.
RE: cant save data to text file. - Larz60+ - Oct-27-2017
what does a4 look like?
could this have something to do with it?
#value4 = (a4.get())That's commented out
RE: cant save data to text file. - darktitan - Oct-27-2017
(Oct-27-2017, 04:49 PM)Larz60+ Wrote: what does a4 look like?
could this have something to do with it?
#value4 = (a4.get())That's commented out
That line was commented out for another experimental reason. But its the a4 string which i want to save to text file. The code that generate the data is
def funktion(self):
value1 = (a1.get())
value2 = (a2.get())
value3 = (a3.get())
#value4 = (a4.get())
for parts in range(value3):
print('{}-{}-{}-{}\n'.format(value1, value2, parts+1, parts+1))
#self.file.writelines('{}-{}-{}-{}\n'.format(value1, value2, parts+1, parts+1))
a4.set('{}-{}-{}-{}\n'.format(value1, value2, parts+1, parts+1))can this line be the fault ?a4.set('{}-{}-{}-{}\n'.format(value1, value2, parts+1, parts+1))