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List: pykde
Subject: Re: [PyQt] Doubt
From: tanya tanyaradzwa <tanyatanyaradzwa460 () gmail ! com>
Date: 2019-10-24 15:11:50
Message-ID: CABO0HDGe+Pg9Z1eeQ-s+vscKSkzytaObBQR8p_MBWFGiXbHnew () mail ! gmail ! com
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Hi Dennis,
My apology for the late response, I was out of town.
Thank you for the code. I did run it, but the output gives the output as
depicted in the attached file. Please assist.
Warm regards
Tanya
On Mon, Oct 14, 2019 at 5:09 PM Dennis Jensen <djensen@pgcontrols.com>
wrote:
> Okay first of all what you posted did not execute due to a few typos and
> such so I went and rendered it and added a few adjustments:
>
> import argparse
>
> from sys import exit as sysExit
> from pprint import pprint
>
> from PyQt5.QtWidgets import QApplication, QWidget, QHBoxLayout, QVBoxLayout
> from PyQt5.QtWidgets import QInputDialog, QLineEdit, QPushButton
>
> # Okay because this Window is so simple there is no reason to
> # sub-class it beyond this however if it were a QMainWindow the
> # Center Widget would have been the main gui implementation and
> # QMainWindow would have been the Controller Class or Main
> # Application that coordinates all the elements between the Gui
> # and any Data Sources it might have
> class TutorialWindow(QWidget):
> # The Init had a typo
> def __init__(self):
> QWidget.__init__(self)
>
> # Okay its a simple thing but every window ought to
> # have its own Title
> self.setWindowTitle('Tutorial Window')
> self.setGeometry(300, 300, 290, 140)
>
> # Using the coordinate system is not PyQt as it was
> # designed to use the Layout system as follows
> self.btnOpen = QPushButton('Open')
> self.btnOpen.clicked.connect(self.showDialog)
>
> self.lneTextName = QLineEdit()
> self.lneTextName.setPlaceholderText("Enter your name:")
>
> # This is an invisible horizontal box to put these 2
> # widgets on the same line and because we want the
> # Textbox to expand with the window we do not tack a
> # Stretch object to it
> HBox = QHBoxLayout()
> HBox.addWidget(self.btnOpen)
> HBox.addWidget(self.lneTextName)
>
> # This is a vertical which is only needed because IOError
> # wanted to place the previous objects at the top of the
> # layout so I add the above horizontal box to the vertical
> # box and follow it with a Stretch object
> VBox = QVBoxLayout()
> VBox.addLayout(HBox)
> VBox.addStretch(1)
>
> # We could do this cryptically by passing objects into
> # other objects but I find that doing it explicitly helps
> # to make things more clean and clear
> self.setLayout(VBox)
>
> # This was improperly indented (to far) it is part of the class
> # but should not be contained within the Init function
> def showDialog(self):
> text, result = QInputDialog.getText(self, 'Input Dialog', 'Enter
> your name:')
> if result == True:
> self.lneTextName.setText(str(text))
>
> # Just an Argparse example snippet
> def GetCmdLineArgs():
> Parsr = argparse.ArgumentParser()
> Parsr.add_argument('echo')
> ArgVals = Parsr.parse_args()
>
> return ArgVals
>
> if __name__ == '__main__':
> # If you are going to do Command Line Arguments I would
> # strongly suggest you look into Argparse as it is the
> # recommended command-line standard Python parsing module
> CmdLneArgs = GetCmdLineArgs()
> pprint('Command Line Arguements = ' + CmdLneArgs.echo)
>
> # Using Argparse means QApplication will never import any
> # command line objects as such we supply an empty list instead
> # Further what QApplication returns is your Main Application
> # Event Thread as such I name it accordingly to reduce any
> # potential confusion about its true purpose
> MainEvntThred = QApplication([])
>
> # While this is often the Main Gui it really is the PyQt
> # Main Application especially if you get into any more
> # complicated Gui/Application renderings and thus again
> # I name it accordingly to reduce confusion about its
> # true purpose
> MainApp = TutorialWindow()
> MainApp.show()
>
> sysExit(MainEvntThred.exec_())
>
> On 10/12/2019 10:02 AM, tanya tanyaradzwa wrote:
>
> Hello everyone,
>
> Referring to the assignment question l asked for your assistance, please
> find my code herein, and attached is the output on my side. Thank you. Tanya
>
> import sys
> from pprint import pprint
> from PyQt5.QtWidgets import QWidget, QPushButton, QInputDialog, QLineEdit,
> QApplication
>
> class TutorialWindow(QWidget):
> def __init(self):
> super().__init__()
> self.btn = QPushButton('Open', self)
> self.btn.move(0, 20)
> self.btn.clicked.connect(self.showDialog)
>
> self.text_name = QLineEdit(self)
> self.text_name.move(100, 22)
> self.text_name.setPlaceholderText("Enter your name:")
>
> self.Geometry(300, 300, 290, 140)
>
> def showDialog(self):
> text, result = QInputDialog.getText(self, 'Input Dialog',
> 'Enter your name:')
> if result ==True:
> self.text_name.setText(str(text))
>
> if __name__ == '__main__':
> app = QApplication(sys.argv)
> pprint("input parameters = " + str(sys.argv))
> tutorial_window = TutorialWindow()
> tutorial_window.show()
> sys.exit(app.exec_())
>
>
> On Oct 4, 2019 14:33, "tanya tanyaradzwa" <tanyatanyaradzwa460@gmail.com>
> wrote:
>
> > Hi Florian,
> >
> > Thank you for your response.
> >
> > I will send to you my code and the output on my side.
> >
> > On Oct 4, 2019 09:56, "Florian Bruhin" <me@the-compiler.org> wrote:
> >
> > > Hey Tanya,
> > >
> > > On Fri, Oct 04, 2019 at 08:50:50AM +0200, tanya tanyaradzwa wrote:
> > > > I am struggling with a school assignment. I have researched all places
> > > > online, but l am failing to bring it all together. Please assist me.
> > > >
> > > > Question:
> > > >
> > > > Create an application using PyQt. The user is prompted for the name of
> > > an
> > > > animal rescue service. This must be displayed in the UI in capital
> > > letters.
> > > > The user is then required to enter a character (letter). This must
> > > also be
> > > > displayed on the UI in capital letters. The application
> > > > must read the name of the animal rescue service as well as the
> > > character
> > > > and then count the number of occurrences of the character in the animal
> > > > rescue service name. The count must be displayed.
> > > >
> > > > Also required:
> > > >
> > > > Error message for incorrect input from user (e.g. no name of animal
> > > rescue
> > > > service).
> > > > Error message of character not found or the character is blank!
> > > >
> > > > May you please assist. Thank you.
> > >
> > > If you have some specific issues, people here would likely be happy to
> > > help.
> > > What do you have so far and where do you run into issues?
> > >
> > > This pretty much boils down to "please do my homework for me", which at
> > > least
> > > I'm not going to do.
> > >
> > > Florian
> > >
> > > --
> > > https://www.qutebrowser.org | me@the-compiler.org (Mail/XMPP)
> > > GPG: 916E B0C8 FD55 A072 | https://the-compiler.org/pubkey.asc
> > > I love long mails! | https://email.is-not-s.ms/
> > >
> >
> _______________________________________________
> PyQt mailing list \
> PyQt@riverbankcomputing.comhttps://www.riverbankcomputing.com/mailman/listinfo/pyqt \
>
[Attachment #5 (text/html)]
<div dir="ltr">Hi Dennis,<div><br></div><div>My apology for the late response, I was \
out of town.</div><div><br></div><div>Thank you for the code. I did run it, but the \
output gives the output as depicted in the attached file. Please \
assist.</div><div><br></div><div><br></div><div>Warm \
regards</div><div><br></div><div>Tanya</div></div><br><div class="gmail_quote"><div \
dir="ltr" class="gmail_attr">On Mon, Oct 14, 2019 at 5:09 PM Dennis Jensen <<a \
href="mailto:djensen@pgcontrols.com">djensen@pgcontrols.com</a>> \
wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF">
<p>Okay first of all what you posted did not execute due to a few
typos and such so I went and rendered it and added a few
adjustments:</p>
<p><font size="-1" face="Courier New, Courier, monospace">import
argparse</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace">from sys
import exit as sysExit</font><br>
<font size="-1" face="Courier New, Courier, monospace">from pprint
import pprint</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace">from
PyQt5.QtWidgets import QApplication, QWidget, QHBoxLayout,
QVBoxLayout</font><br>
<font size="-1" face="Courier New, Courier, monospace">from
PyQt5.QtWidgets import QInputDialog, QLineEdit, QPushButton</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"># Okay
because this Window is so simple there is no reason to</font><br>
<font size="-1" face="Courier New, Courier, monospace"># sub-class
it beyond this however if it were a QMainWindow the</font><br>
<font size="-1" face="Courier New, Courier, monospace"># Center
Widget would have been the main gui implementation and</font><br>
<font size="-1" face="Courier New, Courier, monospace">#
QMainWindow would have been the Controller Class or Main</font><br>
<font size="-1" face="Courier New, Courier, monospace">#
Application that coordinates all the elements between the Gui</font><br>
<font size="-1" face="Courier New, Courier, monospace"># and any
Data Sources it might have</font><br>
<font size="-1" face="Courier New, Courier, monospace">class
TutorialWindow(QWidget):</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # The
Init had a typo</font><br>
<font size="-1" face="Courier New, Courier, monospace"> def
__init__(self):</font><br>
<font size="-1" face="Courier New, Courier, monospace">
QWidget.__init__(self)</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> #
Okay its a simple thing but every window ought to</font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
have its own Title</font><br>
<font size="-1" face="Courier New, Courier, monospace">
self.setWindowTitle('Tutorial Window')</font><br>
<font size="-1" face="Courier New, Courier, monospace">
self.setGeometry(300, 300, 290, 140)</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> #
Using the coordinate system is not PyQt as it was</font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
designed to use the Layout system as follows</font><br>
<font size="-1" face="Courier New, Courier, monospace">
self.btnOpen = QPushButton('Open')</font><br>
<font size="-1" face="Courier New, Courier, monospace">
self.btnOpen.clicked.connect(self.showDialog)</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace">
self.lneTextName = QLineEdit()</font><br>
<font size="-1" face="Courier New, Courier, monospace">
self.lneTextName.setPlaceholderText("Enter your name:")</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> #
This is an invisible horizontal box to put these 2 </font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
widgets on the same line and because we want the </font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
Textbox to expand with the window we do not tack a </font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
Stretch object to it</font><br>
<font size="-1" face="Courier New, Courier, monospace">
HBox = QHBoxLayout()</font><br>
<font size="-1" face="Courier New, Courier, monospace">
HBox.addWidget(self.btnOpen)</font><br>
<font size="-1" face="Courier New, Courier, monospace">
HBox.addWidget(self.lneTextName)</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> #
This is a vertical which is only needed because IOError</font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
wanted to place the previous objects at the top of the </font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
layout so I add the above horizontal box to the vertical</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # box
and follow it with a Stretch object</font><br>
<font size="-1" face="Courier New, Courier, monospace">
VBox = QVBoxLayout()</font><br>
<font size="-1" face="Courier New, Courier, monospace">
VBox.addLayout(HBox)</font><br>
<font size="-1" face="Courier New, Courier, monospace">
VBox.addStretch(1)</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> # We
could do this cryptically by passing objects into</font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
other objects but I find that doing it explicitly helps</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # to
make things more clean and clear </font><br>
<font size="-1" face="Courier New, Courier, monospace">
self.setLayout(VBox)</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> # This
was improperly indented (to far) it is part of the class</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # but
should not be contained within the Init function</font><br>
<font size="-1" face="Courier New, Courier, monospace"> def
showDialog(self):</font><br>
<font size="-1" face="Courier New, Courier, monospace">
text, result = QInputDialog.getText(self, 'Input Dialog', 'Enter
your name:')</font><br>
<font size="-1" face="Courier New, Courier, monospace"> if
result == True:</font><br>
<font size="-1" face="Courier New, Courier, monospace">
self.lneTextName.setText(str(text))</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"># Just an
Argparse example snippet</font><br>
<font size="-1" face="Courier New, Courier, monospace">def
GetCmdLineArgs():</font><br>
<font size="-1" face="Courier New, Courier, monospace"> Parsr =
argparse.ArgumentParser()</font><br>
<font size="-1" face="Courier New, Courier, monospace">
Parsr.add_argument('echo')</font><br>
<font size="-1" face="Courier New, Courier, monospace"> ArgVals
= Parsr.parse_args()</font><br>
<font size="-1" face="Courier New, Courier, monospace"> </font><br>
<font size="-1" face="Courier New, Courier, monospace"> return
ArgVals</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace">if __name__
== '__main__':</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # If you
are going to do Command Line Arguments I would</font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
strongly suggest you look into Argparse as it is the</font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
recommended command-line standard Python parsing module </font><br>
<font size="-1" face="Courier New, Courier, monospace">
CmdLneArgs = GetCmdLineArgs()</font><br>
<font size="-1" face="Courier New, Courier, monospace">
pprint('Command Line Arguements = ' + CmdLneArgs.echo)</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> # Using
Argparse means QApplication will never import any</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # command
line objects as such we supply an empty list instead</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # Further
what QApplication returns is your Main Application</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # Event
Thread as such I name it accordingly to reduce any</font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
potential confusion about its true purpose</font><br>
<font size="-1" face="Courier New, Courier, monospace">
MainEvntThred = QApplication([])</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace"> # While
this is often the Main Gui it really is the PyQt </font><br>
<font size="-1" face="Courier New, Courier, monospace"> # Main
Application especially if you get into any more </font><br>
<font size="-1" face="Courier New, Courier, monospace"> #
complicated Gui/Application renderings and thus again</font><br>
<font size="-1" face="Courier New, Courier, monospace"> # I name
it accordingly to reduce confusion about its </font><br>
<font size="-1" face="Courier New, Courier, monospace"> # true
purpose</font><br>
<font size="-1" face="Courier New, Courier, monospace"> MainApp
= TutorialWindow()</font><br>
<font size="-1" face="Courier New, Courier, monospace">
MainApp.show()</font><br>
<br>
<font size="-1" face="Courier New, Courier, monospace">
sysExit(MainEvntThred.exec_())</font><br>
<br>
</p>
<div>On 10/12/2019 10:02 AM, tanya
tanyaradzwa wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">
<div dir="auto">Hello everyone,</div>
<div dir="auto"><br>
</div>
<div dir="auto">Referring to the assignment question l asked for
your assistance, please find my code herein, and attached is
the output on my side. Thank you. Tanya</div>
<div dir="auto"><br>
</div>
<div dir="auto">import sys</div>
<div dir="auto">from pprint import pprint</div>
<div dir="auto">from PyQt5.QtWidgets import QWidget,
QPushButton, QInputDialog, QLineEdit, QApplication</div>
<div dir="auto"><br>
</div>
<div dir="auto">class TutorialWindow(QWidget):</div>
<div dir="auto"> def __init(self):</div>
<div dir="auto"> super().__init__()</div>
<div dir="auto"> self.btn = QPushButton('Open', \
self)</div> <div dir="auto"> self.btn.move(0, 20)</div>
<div dir="auto"> self.btn.clicked.connect(self.showDialog)</div>
<div dir="auto"><br>
</div>
<div dir="auto"> self.text_name = QLineEdit(self)</div>
<div dir="auto"> self.text_name.move(100, 22)</div>
<div dir="auto"> self.text_name.setPlaceholderText("Enter
your name:")</div>
<div dir="auto"><br>
</div>
<div dir="auto"> self.Geometry(300, 300, 290, 140)</div>
<div dir="auto"><br>
</div>
<div dir="auto"> def showDialog(self):</div>
<div dir="auto"> text, result =
QInputDialog.getText(self, 'Input Dialog', 'Enter your \
name:')</div> <div dir="auto"> if result ==True:</div>
<div dir="auto"> \
self.text_name.setText(str(text))</div> <div dir="auto"><br>
</div>
<div dir="auto">if __name__ == '__main__':</div>
<div dir="auto"> app = QApplication(sys.argv)</div>
<div dir="auto"> pprint("input parameters = " +
str(sys.argv))</div>
<div dir="auto"> tutorial_window = TutorialWindow()</div>
<div dir="auto"> tutorial_window.show()</div>
<div dir="auto"> sys.exit(app.exec_())</div>
<div dir="auto"><br style="font-family:sans-serif;font-size:12.8px">
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Oct 4, 2019 14:33, "tanya
tanyaradzwa" <<a href="mailto:tanyatanyaradzwa460@gmail.com" \
target="_blank">tanyatanyaradzwa460@gmail.com</a>> wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div dir="auto">Hi \
Florian, <div dir="auto"><br>
</div>
<div dir="auto">Thank you for your response.</div>
<div dir="auto"><br>
</div>
<div dir="auto">I will send to you my code and the output
on my side.</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Oct 4, 2019 09:56, "Florian
Bruhin" <<a href="mailto:me@the-compiler.org" \
target="_blank">me@the-compiler.org</a>> wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hey Tanya,<br>
<br>
On Fri, Oct 04, 2019 at 08:50:50AM +0200, tanya
tanyaradzwa wrote:<br>
> I am struggling with a school assignment. I have
researched all places<br>
> online, but l am failing to bring it all
together. Please assist me.<br>
> <br>
> Question:<br>
> <br>
> Create an application using PyQt. The user is
prompted for the name of an<br>
> animal rescue service. This must be displayed in
the UI in capital letters.<br>
> The user is then required to enter a character
(letter). This must also be<br>
> displayed on the UI in capital letters. The
application<br>
> must read the name of the animal rescue service
as well as the character<br>
> and then count the number of occurrences of the
character in the animal<br>
> rescue service name. The count must be displayed.<br>
> <br>
> Also required:<br>
> <br>
> Error message for incorrect input from user (e.g.
no name of animal rescue<br>
> service).<br>
> Error message of character not found or the
character is blank!<br>
> <br>
> May you please assist. Thank you.<br>
<br>
If you have some specific issues, people here would
likely be happy to help.<br>
What do you have so far and where do you run into
issues?<br>
<br>
This pretty much boils down to "please do my homework
for me", which at least<br>
I'm not going to do.<br>
<br>
Florian<br>
<br>
-- <br>
<a href="https://www.qutebrowser.org" rel="noreferrer" \
target="_blank">https://www.qutebrowser.org</a>
| <a href="mailto:me@the-compiler.org" \
target="_blank">me@the-compiler.org</a> (Mail/XMPP)<br>
GPG: 916E B0C8 FD55 A072 | <a \
href="https://the-compiler.org/pubkey.asc" rel="noreferrer" \
target="_blank">https://the-compiler.org/pubkey.asc</a><br>
I love long mails! | <a \
href="https://email.is-not-s.ms/" rel="noreferrer" \
target="_blank">https://email.is-not-s.ms/</a><br> </blockquote>
</div>
</div>
</blockquote>
</div>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
PyQt mailing list <a href="mailto:PyQt@riverbankcomputing.com" \
target="_blank">PyQt@riverbankcomputing.com</a> <a \
href="https://www.riverbankcomputing.com/mailman/listinfo/pyqt" \
target="_blank">https://www.riverbankcomputing.com/mailman/listinfo/pyqt</a> </pre>
</blockquote>
</div>
</blockquote></div>
["Dennis_Code_Output.PNG" (image/png)]
[Attachment #7 (text/plain)]
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