Please help!

[monamour]

Dear all,

 I am a new in python programming QT. I am trying to make a small program to download videos from Youtube but I have small issue in it.

The program design as follows:

First line "lineEdit" for url link.
Second line "lineEdit_2" for save as in my desktop.
Third line "pushbutton" for click to download.

Everything is working smoothly. What I want is when I press in the download button (Pushbutton) through a message box: "The link is empty" by checking the fields "lineEdit" or "lineEdit_2" if it is blank (empty) or not.

What I have tried this statement,

if len(self.lineEdit.text()) == 0 and len(self.lineEdit_2.text()) == 1:
QMessageBox.information(self, "Error", "The link is empty")

The code

###PyQt5 && Python 3.4####

#class
    self.Handel_Buttons()
	self.Handel_Browse()
	

def Handel_Buttons(self):
    self.pushButton.clicked.connect(self.Download)

def Handel_Browse(self):
    pass

def Download(self):
    url= self.lineEdit.text()
    save_location = self.lineEdit_2.text()
	
	# First check
	if len(self.lineEdit.text()) == 0 and len(self.lineEdit_2.text()) == 1:
		QMessageBox.information(self, "Error", "The link is empty")

    try:
       urllib.request.urlretrieve(url, save_location)
    except Exception:

        QMessageBox.warning(self , "Download Error" , "The Download is Failed")
        return
        QMessageBox.Information(self , "Download Completed" , "The Download is Finished")

###End of the code###

But no success. Any ideas.

Many thanks,

[jsulm]

@monamour said in Please help!:

if len(self.lineEdit.text()) == 0 and len(self.lineEdit_2.text()) == 1

Why do you have

len(self.lineEdit_2.text()) == 1

? Why 1?
Also you can use http://doc.qt.io/qt-5/qstring.html#length

if not self.lineEdit.text().empty() and not self.lineEdit_2.text().empty:
    QMessageBox.information(self, "Error", "The link is empty")

[monamour]

@jsulm Thanks so much for your quick replying.

I've tried your code and this the error message:

Traceback (most recent call last):
File "index.py", line 44, in Download
if not self.lineEdit.text().empty() and not self.lineEdit_2.text().empty:
AttributeError: 'str' object has no attribute 'empty'

[jsulm]

@monamour

if not self.lineEdit.text().empty() and not self.lineEdit_2.text().empty():
    QMessageBox.information(self, "Error", "The link is empty")

[monamour]

@jsulm Exactely the same error message that I have mentioned.

####Error Message###
Traceback (most recent call last):
File "index.py", line 44, in Download
if not self.lineEdit.text().empty() and not self.lineEdit_2.text().empty:
AttributeError: 'str' object has no attribute 'empty'

[jsulm]

@monamour OK. It returns a Python string. Then use your approach with len(...), but fix that == 1

[monamour]

@jsulm The problem has been solved after I fixed the "== 1".

Many thanks. I am so appreciated for your help.

[Pablo J. Rogina]

@monamour if your issue is solved, please don't forget to mark your post as such! Thanks

[monamour]

@Pablo-J.-Rogina Done. Thanks.