Use ==/!= to compare str literals

DemoPrograms/Demo_Button_States.py

@@ -46,6 +46,6 @@ while True:
         [window.FindElement(key).Update(disabled=value) for key,value in {'_Start_':False, '_Stop_':True, '_Reset_':True, '_Submit_':True}.items()]
         recording = False
         have_data = False
-    elif event is '_Submit_' and have_data:
+    elif event == '_Submit_' and have_data:
         [window.FindElement(key).Update(disabled=value) for key,value in {'_Start_':False, '_Stop_':True, '_Reset_':True, '_Submit_':False}.items()]
         recording = False

DemoPrograms/Demo_Canvas.py

@@ -18,7 +18,5 @@ while True:
     event, values = window.Read()
     if event is None:
         break
-    if event is 'Blue':
+    if event in ('Blue', 'Red'):
-        window.FindElement('canvas').TKCanvas.itemconfig(cir, fill = "Blue")
+        window.FindElement('canvas').TKCanvas.itemconfig(cir, fill=event)
-    elif event is 'Red':
-        window.FindElement('canvas').TKCanvas.itemconfig(cir, fill = "Red")

DemoPrograms/Demo_Chat.py

@@ -11,7 +11,7 @@ A chat window.  Add call to your send-routine, print the response and you're don
 To see this program RUN on the web go here:
 https://repl.it/@PySimpleGUI/Chat-Application-Demo
 
-Note that the size of the display on repl.it is smaller than most, so the sizes of the 
+Note that the size of the display on repl.it is smaller than most, so the sizes of the
 Multiline and Output text areas were reduced in the online version.  Nothing else was changed
 '''
 
@@ -31,7 +31,7 @@ window = sg.Window('Chat window',
 # ---===--- Loop taking in user input and using it  --- #
 while True:
     event, value = window.Read()
-    if event is 'SEND':
+    if event == 'SEND':
         query = value['query'].rstrip()
         # EXECUTE YOUR COMMAND HERE
         print('The command you entered was {}'.format(query))

DemoPrograms/Demo_Chat_With_History.py

@@ -33,7 +33,7 @@ def ChatBotWithHistory():
     history_offset = 0
     while True:
         (event, value) = window.Read()
-        if event is 'SEND':
+        if event == 'SEND':
             query = value['query'].rstrip()
             # EXECUTE YOUR COMMAND HERE
             print('The command you entered was {}'.format(query))
@@ -41,7 +41,7 @@ def ChatBotWithHistory():
             history_offset = len(command_history)-1
             window.FindElement('query').Update('')                       # manually clear input because keyboard events blocks clear
             window.FindElement('history').Update('\n'.join(command_history[-3:]))
-        elif event is None or event is 'EXIT':            # quit if exit event or X
+        elif event in (None, 'EXIT'):            # quit if exit event or X
             break
         elif 'Up' in event and len(command_history):
             command = command_history[history_offset]

DemoPrograms/Demo_Chatterbot.py

@@ -12,7 +12,7 @@ import chatterbot.utils
 '''
 Demo_Chatterbot.py
 A GUI wrapped arouind the Chatterbot package.
-The GUI is used to show progress bars during the training process and 
+The GUI is used to show progress bars during the training process and
 to collect user input that is sent to the chatbot.  The reply is displayed in the GUI window
 '''
 
@@ -67,7 +67,7 @@ window = sg.Window('Chat Window', auto_size_text=True, default_element_size=(30,
 # ---===--- Loop taking in user input and using it to query HowDoI web oracle --- #
 while True:
     event, (value,) = window.Read()
-    if event is not 'SEND':
+    if event != 'SEND':
         break
     string = value.rstrip()
     print('     '+string)

DemoPrograms/Demo_Chatterbot_With_TTS.py

@@ -16,7 +16,7 @@ import os
 '''
 Demo_Chatterbot.py
 A GUI wrapped arouind the Chatterbot package.
-The GUI is used to show progress bars during the training process and 
+The GUI is used to show progress bars during the training process and
 to collect user input that is sent to the chatbot.  The reply is displayed in the GUI window
 '''
 
@@ -87,7 +87,7 @@ window = sg.Window('Chat Window', auto_size_text=True, default_element_size=(30,
 # ---===--- Loop taking in user input and using it to query HowDoI web oracle --- #
 while True:
     event, (value,) = window.Read()
-    if event is not 'SEND':
+    if event != 'SEND':
         break
     string = value.rstrip()
     print('     '+string)

DemoPrograms/Demo_Desktop_Widget_Timer.py

@@ -8,13 +8,13 @@ import time
 
 """
  Timer Desktop Widget Creates a floating timer that is always on top of other windows You move it by grabbing anywhere on the window Good example of how to do a non-blocking, polling program using SimpleGUI Can be used to poll hardware when running on a Pi
- 
+
  While the timer ticks are being generated by PySimpleGUI's "timeout" mechanism, the actual value
   of the timer that is displayed comes from the system timer, time.time().  This guarantees an
   accurate time value is displayed regardless of the accuracy of the PySimpleGUI timer tick. If
   this design were not used, then the time value displayed would slowly drift by the amount of time
-  it takes to execute the PySimpleGUI read and update calls (not good!)     
+  it takes to execute the PySimpleGUI read and update calls (not good!)
- 
+
  NOTE - you will get a warning message printed when you exit using exit button.
  It will look something like: invalid command name \"1616802625480StopMove\"
 """
@@ -46,9 +46,9 @@ while (True):
     if event == 'button':
         event = window.FindElement(event).GetText()
     # --------- Do Button Operations --------
-    if event is None or event == 'Exit':        # ALWAYS give a way out of program
+    if event in (None, 'Exit'):        # ALWAYS give a way out of program
         break
-    if event is 'Reset':
+    if event == 'Reset':
         start_time = int(round(time.time() * 100))
         current_time = 0
         paused_time = start_time

DemoPrograms/Demo_EXE_Maker.py

@@ -25,7 +25,7 @@ def Launcher():
     # ---===--- Loop taking in user input --- #
     while True:
         (button, values) = window.Read()
-        if button is 'Quit' or button is None:
+        if button in ('Quit', None):
             break           # exit button clicked
 
         source_file = values['_sourcefile_']
@@ -40,7 +40,7 @@ def Launcher():
         file_to_remove = os.path.join(source_path, source_filename[:-3]+'.spec')
         command_line = 'pyinstaller -wF "{}" {} {} {} {}'.format(source_file, icon_option, workpath_option, dispath_option, specpath_option)
 
-        if button is 'Make EXE':
+        if button == 'Make EXE':
             try:
                 print(command_line)
                 print('Making EXE... this will take a while.. the program has NOT locked up...')

DemoPrograms/Demo_Fill_Form.py

@@ -48,15 +48,15 @@ def Everything():
     while True:
         event, values = window.Read()
 
-        if event is 'SaveSettings':
+        if event == 'SaveSettings':
             filename = sg.PopupGetFile('Save Settings', save_as=True, no_window=True)
             window.SaveToDisk(filename)
             # save(values)
-        elif event is 'LoadSettings':
+        elif event == 'LoadSettings':
             filename = sg.PopupGetFile('Load Settings', no_window=True)
             window.LoadFromDisk(filename)
             # load(form)
-        elif event in ['Exit', None]:
+        elif event in ('Exit', None):
             break
 
     # window.CloseNonBlocking()

DemoPrograms/Demo_Graph_Drawing.py

@@ -21,11 +21,9 @@ while True:
     event, values = window.Read()
     if event is None:
         break
-    if event is 'Blue':
+    if event in ('Blue', 'Red'):
-        graph.TKCanvas.itemconfig(circle, fill = "Blue")
+        graph.TKCanvas.itemconfig(circle, fill=event)
-    elif event is 'Red':
+    elif event == 'Move':
-        graph.TKCanvas.itemconfig(circle, fill = "Red")
-    elif event is 'Move':
         graph.MoveFigure(point, 10,10)
         graph.MoveFigure(circle, 10,10)
         graph.MoveFigure(oval, 10,10)

DemoPrograms/Demo_Matplotlib_Animated.py

@@ -37,7 +37,7 @@ def main():
     dpts = [randint(0, 10) for x in range(10000)]
     for i in range(len(dpts)):
         event, values = window.Read(timeout=10)
-        if event is 'Exit' or event is None:
+        if event in ('Exit', None):
             exit(69)
 
         slider_elem.Update(i)

DemoPrograms/Demo_Matplotlib_Animated_Scatter.py

@@ -27,7 +27,7 @@ def main():
 
     while True:
         event, values = window.Read(timeout=10)
-        if event is 'Exit' or event is None:
+        if event in ('Exit', None):
             exit(69)
 
         def PyplotScatterWithLegend():

DemoPrograms/Demo_Matplotlib_Browser.py

@@ -889,7 +889,7 @@ while True:
     event, values = window.Read()
     print(event)
     # show it all again and get buttons
-    if event is None or event is 'Exit':
+    if event in (None, 'Exit'):
         break
 
     try:

DemoPrograms/Demo_Matplotlib_Browser_Paned.py

@@ -892,7 +892,7 @@ while True:
     event, values = window.Read()
     # print(event)
     # show it all again and get buttons
-    if event is None or event is 'Exit':
+    if event in (None, 'Exit'):
         break
 
     try:

DemoPrograms/Demo_Matplotlib_Ping_Graph.py

@@ -64,10 +64,10 @@ Note this file contains a copy of ping.py. It is contained in the first part of
     May 1, 2014
     -----------
     Little modifications by Mohammad Emami <emamirazavi@gmail.com>
-    - Added Python 3 support. For now this project will just support 
+    - Added Python 3 support. For now this project will just support
       python 3.x
     - Tested with python 3.3
-    - version was upped to 0.6 
+    - version was upped to 0.6
 
     March 19, 2013
     --------------
@@ -663,7 +663,7 @@ def main():
 
     while True:
         event, values = window.Read(timeout=0)
-        if event is 'Exit' or event is None:
+        if event in ('Exit', None):
             exit(0)
 
         run_a_ping_and_graph()

DemoPrograms/Demo_Matplotlib_Ping_Graph_Large.py

@@ -97,7 +97,7 @@ def main():
 
     while True:
         event, values = window.Read(timeout=0)
-        if event is 'Exit' or event is None:
+        if event in ('Exit', None):
             break
 
         run_a_ping_and_graph()
@@ -106,5 +106,3 @@ def main():
 
 if __name__ == '__main__':
     main()
-
-

DemoPrograms/Demo_NonBlocking_Form.py

@@ -28,7 +28,7 @@ def StatusOutputExample():
         # This is the code that reads and updates your window
         event, values = window.Read(timeout=10)
         window.FindElement('output').Update('{:02d}:{:02d}.{:02d}'.format((i // 100) // 60, (i // 100) % 60, i % 100))
-        if event == 'Quit' or event is None:
+        if event in ('Quit', None):
             break
         if event == 'LED On':
             print('Turning on the LED')
@@ -63,9 +63,9 @@ def RemoteControlExample():
     while (True):
         # This is the code that reads and updates your window
         event, values = window.Read(timeout=0, timeout_key='timeout')
-        if event is not 'timeout':
+        if event != 'timeout':
             print(event)
-        if event == 'Quit' or event is None:
+        if event in ('Quit', None):
             break
 
     window.Close()

DemoPrograms/Demo_OpenCV.py

@@ -41,7 +41,7 @@ def main():
     i = 0
     while vidFile.isOpened():
         event, values = window.Read(timeout=0)
-        if event is 'Exit' or event is None:
+        if event in ('Exit', None):
             exit(69)
         ret, frame = vidFile.read()
         if not ret:  # if out of data stop looping

DemoPrograms/Demo_Pi_LEDs.py

@@ -45,9 +45,9 @@ while True:
     if event is None:
         break
 
-    if event is 'Switch LED':
+    if event == 'Switch LED':
         window.FindElement('output').Update(SwitchLED())
-    elif event is 'Flash LED':
+    elif event == 'Flash LED':
         window.FindElement('output').Update('LED is Flashing')
         window.Refresh()
         FlashLED()

DemoPrograms/Demo_Script_Launcher.py

@@ -62,7 +62,7 @@ def Launcher2():
             print('Quickly launch your favorite programs using these shortcuts')
             print('Or  copy files to your github folder.  Or anything else you type on the command line')
             # copyfile(source, dest)
-        elif event is 'Run':
+        elif event == 'Run':
             for index, file in enumerate(values['demolist']):
                 print('Launching %s'%file)
                 window.Refresh()          # make the print appear immediately

DemoPrograms/Demo_Timer.py

@@ -27,9 +27,9 @@ def Timer():
         if values is None or button == 'Exit':
             break
 
-        if button is 'Reset':
+        if button == 'Reset':
             i=0
-        elif button is 'Pause':
+        elif button == 'Pause':
             paused = not paused
 
         if not paused:

DemoPrograms/Demo_Youtube-dl_Frontend.py

@@ -7,7 +7,7 @@ else:
 import subprocess
 
 """
-Simple wrapper for youtube-dl.exe. 
+Simple wrapper for youtube-dl.exe.
 Paste the youtube link into the GUI. The GUI link is queried when you click Get List.
 Get List will populate the pulldown list with the language options available for the video.
 Choose the language to download and click Download
@@ -45,9 +45,7 @@ def DownloadSubtitlesGUI():
             print('Done')
 
         elif event == 'Download':
-            lang = values['lang']
+            lang = values['lang'] or 'en'
-            if lang is '':
-                lang = 'en'
             print(f'Downloading subtitle for {lang}...')
             window.Refresh()
             command = [f'C:\\Python\\Anaconda3\\Scripts\\youtube-dl.exe --sub-lang {lang} --write-sub {link}',]

HowDoI/PySimpleGUI-HowDoI.py

@@ -47,7 +47,7 @@ def HowDoI():
     history_offset = 0
     while True:
         (button, value) = window.Read()
-        if button is 'SEND':
+        if button == 'SEND':
             query = value['query'].rstrip()
             print(query)
             QueryHowDoI(query, value['Num Answers'], value['full text'])  # send the string to HowDoI
@@ -55,7 +55,7 @@ def HowDoI():
             history_offset = len(command_history)-1
             window.FindElement('query').Update('')                       # manually clear input because keyboard events blocks clear
             window.FindElement('history').Update('\n'.join(command_history[-3:]))
-        elif button is None or button is 'EXIT':            # if exit button or closed using X
+        elif button in (None, 'EXIT'):            # if exit button or closed using X
             break
         elif 'Up' in button and len(command_history):                                # scroll back in history
             command = command_history[history_offset]

PySimpleGUIQt/Demo Programs/Qt_Demo_Desktop_Widget_Timer.py

@@ -14,7 +14,7 @@ import time
   of the timer that is displayed comes from the system timer, time.time().  This guarantees an
   accurate time value is displayed regardless of the accuracy of the PySimpleGUI timer tick. If
   this design were not used, then the time value displayed would slowly drift by the amount of time
-  it takes to execute the PySimpleGUI read and update calls (not good!)     
+  it takes to execute the PySimpleGUI read and update calls (not good!)
 
  NOTE - you will get a warning message printed when you exit using exit button.
  It will look something like: invalid command name \"1616802625480StopMove\"
@@ -48,9 +48,9 @@ while (True):
     if event == 'button':
         event = window.FindElement(event).GetText()
     # --------- Do Button Operations --------
-    if event is None or event == 'Exit':  # ALWAYS give a way out of program
+    if event in (None, 'Exit'):  # ALWAYS give a way out of program
         break
-    if event is 'Reset':
+    if event == 'Reset':
         start_time = int(round(time.time() * 100))
         current_time = 0
         paused_time = start_time

PySimpleGUIWeb/Demo Programs/Web_Timer.py

@@ -30,9 +30,9 @@ while (True):
     if event == 'button':
         event = window.FindElement(event).GetText()
     # --------- Do Button Operations --------
-    if event is None or event == 'Exit':        # ALWAYS give a way out of program
+    if event in (None, 'Exit'):        # ALWAYS give a way out of program
         break
-    if event is 'Reset':
+    if event == 'Reset':
         start_time = int(round(time.time() * 100))
         current_time = 0
         paused_time = start_time

exemaker/pysimplegui-exemaker/pysimplegui-exemaker.py

@@ -25,7 +25,7 @@ def Launcher():
     # ---===--- Loop taking in user input --- #
     while True:
         (button, values) = window.Read()
-        if button is 'Quit' or button is None:
+        if button in ('Quit', None):
             break           # exit button clicked
 
         source_file = values['_sourcefile_']
@@ -40,7 +40,7 @@ def Launcher():
         file_to_remove = os.path.join(source_path, source_filename[:-3]+'.spec')
         command_line = 'pyinstaller -wF "{}" {} {} {} {}'.format(source_file, icon_option, workpath_option, dispath_option, specpath_option)
 
-        if button is 'Make EXE':
+        if button == 'Make EXE':
             out=''
             try:
                 print(command_line)