I have a wxListBox filled with strings. I would like to write the contents of my wxListBox to a .txt file.
I have tried:
def saveDB(self, parent):
listBox = ""
for i in range(self.listBox.GetCount()):
listBox = self.listBox.GetString(i) + "\n"
This does not seem to be getting the job done. How can I write the contents to a .txt file?
listBox = ""
for i in range(self.listBox.GetCount()):
listBox = self.listBox.GetString(i) + "\n"
This just got the listbox content into a 'listBox' variable.
You need to write to a file, something like this should do.
f = open('yourfile.txt', 'w')
f.write(listBox)
f.close()
Related
How do i load a text file into QListWidget , such that each line in the textfile is an item in QListWidget,
and once i populate it, i also want to save all items of listwidget into a text file , such that each item of listwidget is in a line in the text file , to accomplish that i am attempting this
QString temp;
for(int i=0; i< ui->mylistwidget->count();i++)
{
QListWidgetItem* item = ui->mylistwidget->item(i);
temp += item->text();
}
std::string total_script = temp.toStdString();
i got all the text of listwidget items in a string , what do i do next if i want to save it in a text file?
and also how do i load text file and populate my qlistwidget with items ?
Qt provides QFile and QSaveFile classes for convenient file input/output operations. QSaveFile is special in as it will only (over)write the destination file when you commit it. For both parsing and writing the file contents, you can use QTextStream, which exposes the file contents as a stream you can read from or write to, including conversion of various variable types.
For importing from file:
Use a QFile to open the file
Construct QTextStream with the file as argument
Use QTextStream::readLine() in a while-loop to read lines and create items
For exporting to file:
Use a QSaveFile, again construct QTextStream on the file
In your loop, use QTextStream::operator<< to append the item text to the stream
Call commit() on the file so it is written
Example without the loop:
QSaveFile fileOut(filename);
QTextStream out(&fileOut);
out << "Qt rocks!" << Qt::endl; // do this for every item
fileOut.commit()
I wanted to get user input from user using Tkinter's Entry something like this
from Tkinter import *
top = Tk()
label = Label(top, text="Enter your bio")
entry = Entry(top, bd = 2)
def create_new():
new_file = open('file.txt', 'w+')
user_input = str(entry) # I ALSO TRIED WITHOUT str()
new_file.write(user_input) #still doesn't work
button = Button(top, text = "SAVE", fg ="red", command=create_new)
label.pack()
entry.pack()
button.pack()
top.mainloop()
When I add my info in the field and hit SAVE, it does create a new file.txt but it doesn't write my info into the file.txt
file.txt only has some numbers like these
.22775808
.22710272
.22382592
etc...
Any ideas on how can I fix this? Also what do these numbers mean and why are they here?
from tkinter import *
top = Tk()
label = Label(top, text="Enter your bio")
entry = Entry(top, bd = 2)
def create_new():
new_file = open('file.txt', 'w+')
user_input = (entry).get() # I ALSO TRIED WITHOUT str()
new_file.write(user_input) #still doesn't work
button = Button(top, text = "SAVE", fg ="red", command=create_new)
label.pack()
entry.pack()
button.pack()`enter code here`
top.mainloop()
You aren't writing the contents of the Entry, you're writing the Entry itself - which from Python's point of view is just the randomly-generated name of the actual widget which lives in the embedded Tcl/Tk interpreter. Use entry.get() for the actual contents.
You're also forgetting to close the file after you write to it, so anything you do manage to write may not show up immediately.
Currently, I am working on a GUI text editor with python and tkinter. Thanks to the great people at SO (thank you Rinzler), I have managed to modify the font of the text. However, I am unable to save the font and font size to the txt file.
I know that this should be possible as Notepad can modify and save a txt file with a specified font.
This is the code to save to a file:
def file_saveas():
filename = tkFileDialog.asksaveasfile(mode='w', defaultextension=".txt")
if filename is None: # asksaveasfile return `None` if dialog closed with "cancel".
return
text2save = str(textPad.get(1.0, END)) # starts from `1.0`, not `0.0`
filename.write(text2save)
filename.close()
print filename
This is the code (courtesy of Rinzler) to change the font:
def choose_font():
global root, textPad # I hate to use global, but for simplicity
t = Tkinter.Toplevel()
font_name = Tkinter.Label(t, text='Font Name: ')
font_name.grid(row=0, column=0, sticky='nsew')
enter_font = Tkinter.Entry(t)
enter_font.grid(row=0, column=1, sticky='nsew')
font_size = Tkinter.Label(t, text='Font Size: ')
font_size.grid(row=1, column=0, sticky='nsew')
enter_size = Tkinter.Entry(t)
enter_size.grid(row=1, column=1, sticky='nsew')
# associating a lambda with the call to text.config()
# to change the font of text (a Text widget reference)
ok_btn = Tkinter.Button(t, text='Apply Changes',
command=lambda: textPad.config(font=(enter_font.get(),
enter_size.get())))
print font
ok_btn.grid(row=2, column=1, sticky='nsew')
done = Tkinter.Button(t, text='Get rid of Pushy!', command=t.destroy)
done.grid(row=4, column=1, sticky='nsew')
# just to make strechable widgets
# you don't strictly need this
for i in range(2):
t.grid_rowconfigure(i, weight=1)
t.grid_columnconfigure(i, weight=1)
t.grid_rowconfigure(2, weight=1)
Finally, this is the code that reads the font and other configuration information:
font = (fontname, size)
textPad.config(
borderwidth=0,
font=font ,
foreground="green",
background="black",
insertbackground="white", # cursor
selectforeground="blue", # selection
selectbackground="#008000",
wrap="word",
width=64,
undo=True, # Tk 8.4
)
I have searched the internet without coming up with any answers as to why the font and text size are not saved. Any help would be greatly appreciated.
I am using python 2.7.7 , Tkinter, and this is being run on Windows 7.
Any help manipulation an rtf file would also be helpful (currently, I see the tags and not the end format).
There is no support for this in tkinter. You will have to pick a file fomat that supports fonts (rtf, .docx, .html, etc), convert the data in the widget to this format, and then write it to a file.
Notepad can only have a custom font and size for its editor window, it doesn't save it to the file, it just remembers the user's custom settings, and applies them to its window when you use it.
The tkinter text widget can be horrible to save formatting to another format, I've tried converting it to XML to save to a .docx but I haven't been successful. I have used my own format which is a plain text file with an 'index' of the tkinter Text widget tags at the start and their line&column indexes, then a marker for where the document begins, then the document. This cannot hold images though, and it opens with all the formatting index when you open it in another word processor.
XML is ideal for opening and saving the tkinter text contents - use an xml parser to open, then wite a recursive function to add text with tags as you go. (If you want rich text, this, like xml, is an iterative format - elements inside elements, so could be done like i'm describing below for xml, but you need to write your own rich text parser)
import xml.etree.ElementTree as etree
e = etree.fromstring(string)
#create an element tree of the xml file
insert_iter(e)
#call the recursive insert function
def insert_iter(element):
#recursive insert function
text.insert("end", element.text, tagname)
#insert the elements text
for child in element:
insert_iter(child)
#iterate through the element's child elements, calling the recursive function for each
text.insert("end", child.tail, tagname)
#insert the text after the child element
text.tag_config(tagname, **attrib)
#configure the text
'attrib' is a dictionary eg. {"foreground":"red", "underline":True} would make the text you insert have red font and black underline,
'tagname' is a random string, and needs to be automatically created by your program
To save the file, make a function to do the reverse. I wouldn't bother with using the xml library for this - as tkinter outputs the correct format, just write it manually, but make sure to escape it
from xml.sax.saxutils import escape
data = text.dump("1.0", "end")
print(data[0:500]) # print some of the output just to show how the dump method works
output = ''
#get contents of text widget (including all formatting, in order) and create a string to add the output file to
for line in data:
if line[0] == "text":
#add the plain text to the output
output += escape(line[1])
elif line[0] == "tagon":
#add a start xml tag, with attributes for the given tkinter tag
name = 'font'
attrib = ""
tag = #the dictionary you stored in your program when creating this tag
for key in tag:
attrib += "%s='%s' "%(key, escape(tag[key]))
output += "<%s %s>"%(name, attrib)
elif line[0] == "tagoff":
#add a closing xml tag
output += '</%s>'%name
I have written a Tkinter program in which the Browse button is used to select a file and the selected file's complete path gets displayed in the Entry widget. But my problem is, it's displaying the path with 'forward'(/) slashes instead of the conventional windows format of 'backward'(\) slashes. This is strange for me since I'm working on windows os.
Why this occurs ? Is there any before hand fix for this, instead of replace string option ?
my code:
def selectfile():
fileName = askopenfilename(parent=root, title='Choose a file', initialdir='C:\\')
custName.set(fileName) #Populate the text field with the selected file
#create the 'filepath' field
custName = StringVar(None)
filepath = Entry(root, width ='50', textvariable=custName).pack(anchor=W)
#Create the 'Browse' button
browseButton = Button(root, text="Browse", relief = 'raised', width=8, command=selectfile, cursor='hand2').place(x=325,y=16)
Expected Output in Entry widget:
c:\data\file.txt
Actual Output in Entry widget:
c:/data/file.txt
You can always use replace() to replace "/" with "\" for string. Here's link with docs about replace() method:
https://docs.python.org/2/library/string.html?highlight=replace#string.replace
This is workaround fix. Try looking more deeply inside Tkinter's docs for actual answer why this occurs.
I have a program in which I have a button to get File Dialog like
How can I select a file, get the file name and location, and save that to a string displayed in the ui.The signalclicked(), emitted from the button, is connected to the slot fileSELECT().
........
void MainThread::fileSELECT(){
QString fileName = QFileDialog::getOpenFileName(this,tr("Select video"),"d:\\BMDvideos",tr("Video files (*.avi)"));
}
so when I select an .avi file, how do I get its location in fileName displayed like
d:\BMDvideo\videFile.avi
so I thinks that I got it now. my first code was completly wrong.
void MainThread::fileSelect(){
QString fileName = QFileDialog::getOpenFileName(this,tr("Select video"),"d:\\BMDvideos",tr("Video files (*.avi)"));
QLabel *testLabel = new QLabel(fileName);
BOX->addWidget(testLabel);
}
I can see now the path of the selected file
To get the folder path, you can use QFileDialog::getExistingDirectory, and to get the file-name use QFileDialog::getOpenFileName