Python Forum
[HELP] Nested conditional? double condition followed by another condition. - Printable Version

+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: General Coding Help (https://python-forum.io/forum-8.html)
+--- Thread: [HELP] Nested conditional? double condition followed by another condition. (/thread-27257.html)

Pages: 1 2 3

[HELP] Nested conditional? double condition followed by another condition. - penahuse - May-31-2020

Im trying to learn python but struggling on this problem. I will be thankfull if anyone give me some help.


while button1_pressed and button2_pressed: #no matter which one is pressed first to me
	do some
	while button3_pressed: #only if it is pressed after button1 and button2 are pressed
		do some2
		if button2_is_not_pressed:
			break
in practice "do some2" activates even when I press button 3 before buttons 1 and 2. Anyone can help me, please?

RE: [HELP] Nested conditional? double condition followed by another condition. - Yoriz - May-31-2020

button1_pressed and button2_pressed must both be True before you press button 3.

RE: [HELP] Nested conditional? double condition followed by another condition. - penahuse - May-31-2020

(May-31-2020, 03:00 PM)Yoriz Wrote: button1_pressed and button2_pressed must both be True before you press button 3.

Thank you for your answer but i do not fully understand. English isnt my first language.

The button1_pressed, button2_pressed and button3_pressed are functions. I forgot to mention that.

def button1_pressed():  # Returns true if the left mouse button is pressed
    button1_state = win32api.GetKeyState(0x01)
    return button1_state < 0

def button2_pressed():  # Returns true if the right mouse button is pressed
    button2_state = win32api.GetKeyState(0x02)
    return  button2_state < 0

def button3_pressed():  # Returns true if the M button is pressed
    button3_state = win32api.GetKeyState(0x4D)
    return button3_state < 0

while button1_pressed() and button2_pressed(): # No matter which one is pressed first to me
    do some
    while button3_pressed(): # Only if it is pressed after button1 and button2 are pressed
        do some2
        if button2_pressed() == 0:
            break
The problem is: if I press button3_pressed even before button1_pressed and button2_pressed do some2 activate. I do not want this..

RE: [HELP] Nested conditional? double condition followed by another condition. - Yoriz - May-31-2020 

button1_pressed = True
button2_pressed = True
button3_pressed = True
button2_is_not_pressed = True

while button1_pressed and button2_pressed:
    print('do some') # this only happens if both the above are True
    while button3_pressed:
        print('do some2') #  theis only happens if button3_pressed is True
        if button2_is_not_pressed:
            break # this only breaks the inner while loop
    break # added an extra break else it would just be stuck in an endless outer loop
Output:
do some
do some2
The following conditions nothing will happen
button1_pressed = False
button2_pressed = True
button3_pressed = True
button2_is_not_pressed = True

while button1_pressed and button2_pressed:
    print('do some') # this only happens if both the above are True
    while button3_pressed:
        print('do some2') #  theis only happens if button3_pressed is True
        if button2_is_not_pressed:
            break # this only breaks the inner while loop
    break # added an extra break else it would just be stuck in an endless loop
Output:
button1_pressed and button2_pressed must be returning True even though you think they should not be.

RE: [HELP] Nested conditional? double condition followed by another condition. - penahuse - May-31-2020

(May-31-2020, 03:35 PM)Yoriz Wrote: 
button1_pressed = True
button2_pressed = True
button3_pressed = True
button2_is_not_pressed = True

while button1_pressed and button2_pressed:
    print('do some') # this only happens if both the above are True
    while button3_pressed:
        print('do some2') #  theis only happens if button3_pressed is True
        if button2_is_not_pressed:
            break # this only breaks the inner while loop
    break # added an extra break else it would just be stuck in an endless outer loop
Output:
do some
do some2
The following conditions nothing will happen
button1_pressed = False
button2_pressed = True
button3_pressed = True
button2_is_not_pressed = True

while button1_pressed and button2_pressed:
    print('do some') # this only happens if both the above are True
    while button3_pressed:
        print('do some2') #  theis only happens if button3_pressed is True
        if button2_is_not_pressed:
            break # this only breaks the inner while loop
    break # added an extra break else it would just be stuck in an endless loop
Output:
button1_pressed and button2_pressed must be returning True even though you think they should not be.

I really apreciate your help... but imagine this situation:

1 - user press button1 and button2 then press button3
Its ok to me "do some 2"
2 - user press button2 and button1 then press button3
Its ok to me "do some 2"

but

3 - user press button3 before button1 and button2
Its not ok to "do some2", I need just to "do some"
Mate, I should have mentioned that this whole code is inside a Main loop. Im sorry!!

So.. I Thinks to test should be like this:

button1_pressed = True
button2_pressed = True
button3_pressed = True
button2_is_not_pressed = True

while True:
    while button1_pressed and button2_pressed:
        print('do some') # this only happens if both the above are True
        while button3_pressed:
            print('do some2') #  theis only happens if button3_pressed is True
            if button2_is_not_pressed:
                break # this only breaks the inner while loop
        break # added an extra break else it would just be stuck in an endless outer loop


RE: [HELP] Nested conditional? double condition followed by another condition. - DreamingInsanity - May-31-2020

In your function, you get the state of the button press. It can be an integer between 1 and 0 (pressed or not pressed).
When you return it, to get a True or False output you check if it is less than 0.

When the key isn't pressed, button_state is going to be 0:
0 < 0 = True.
Meaning when the button isn't pressed the while loop can still run. Surely you would want something like this:
return bool(button1_state)
Since bool(0) returns False, and bool(1) returns True.

Am I missing something here?

RE: [HELP] Nested conditional? double condition followed by another condition. - penahuse - May-31-2020

(May-31-2020, 04:22 PM)DreamingInsanity Wrote: In your function, you get the state of the button press. It can be an integer between 1 and 0 (pressed or not pressed).
When you return it, to get a True or False output you check if it is less than 0.

When the key isn't pressed, button_state is going to be 0:
0 < 0 = True.
Meaning when the button isn't pressed the while loop can still run. Surely you would want something like this:
return bool(button1_state)
Since bool(0) returns False, and bool(1) returns True.

Am I missing something here?

Thank you for your answer.

I made some mistakes editing the posts..

Could you give a look a it:

def button1_pressed():  # Returns true if the left mouse button is pressed
    button1_state = win32api.GetKeyState(0x01)
    return button1_state < 0
 
def button2_pressed():  # Returns true if the right mouse button is pressed
    button2_state = win32api.GetKeyState(0x02)
    return  button2_state < 0
 
def button3_pressed():  # Returns true if the M button is pressed
    button3_state = win32api.GetKeyState(0x4D)
    return button3_state < 0
 
while True:
    while button1_pressed() and button2_pressed(): # No matter which one is pressed first to me
        print("do some")
        while button3_pressed(): # Only if it is pressed after button1 and button2 are pressed
            print("do some2")
            if button2_pressed() == 0:
                break # this only breaks the inner while loop
        break # added an extra break else it would just be stuck in an endless loop
I forgot to mention this whole code is inside a main loop.

RE: [HELP] Nested conditional? double condition followed by another condition. - DreamingInsanity - May-31-2020

@penahuse

Try this:
def button1_pressed():  # Returns true if the left mouse button is pressed
    button1_state = win32api.GetKeyState(0x01)
    return bool(button1_state)
  
def button2_pressed():  # Returns true if the right mouse button is pressed
    button2_state = win32api.GetKeyState(0x02)
    return  bool(button2_state)
  
def button3_pressed():  # Returns true if the M button is pressed
    button3_state = win32api.GetKeyState(0x4D)
    return bool(button3_state)
  
while True:
    while button1_pressed() and button2_pressed(): # No matter which one is pressed first to me
        print("do some")
        while button3_pressed(): # Only if it is pressed after button1 and button2 are pressed
            print("do some2")
            if button2_pressed() == 0:
                break # this only breaks the inner while loop
        break # added an extra break else it would just be stuck in an endless loop


RE: [HELP] Nested conditional? double condition followed by another condition. - penahuse - May-31-2020

(May-31-2020, 04:52 PM)DreamingInsanity Wrote: @penahuse

Try this:
def button1_pressed():  # Returns true if the left mouse button is pressed
    button1_state = win32api.GetKeyState(0x01)
    return bool(button1_state)
  
def button2_pressed():  # Returns true if the right mouse button is pressed
    button2_state = win32api.GetKeyState(0x02)
    return  bool(button2_state)
  
def button3_pressed():  # Returns true if the M button is pressed
    button3_state = win32api.GetKeyState(0x4D)
    return bool(button3_state)
  
while True:
    while button1_pressed() and button2_pressed(): # No matter which one is pressed first to me
        print("do some")
        while button3_pressed(): # Only if it is pressed after button1 and button2 are pressed
            print("do some2")
            if button2_pressed() == 0:
                break # this only breaks the inner while loop
        break # added an extra break else it would just be stuck in an endless loop

Did not work well. Printed infinite "do some" until I click again any mouse button again (to return False) but I need it to work only if the buttons are pressed at same time.

I apreciate your try anyway!

RE: [HELP] Nested conditional? double condition followed by another condition. - DreamingInsanity - May-31-2020

I did some testing. If you use 'GetAsyncKeyState' it should work. 'GetAsyncKeyState' is basically 'isKeyPressed' so the moment you let go of a button, it will no longer return true.

def button1_pressed():  # Returns true if the left mouse button is pressed
    button1_state = win32api.GetAsyncKeyState(0x01)
    return bool(button1_state)
   
def button2_pressed():  # Returns true if the right mouse button is pressed
    button2_state = win32api.GetAsyncKeyState(0x02)
    return  bool(button2_state)
   
def button3_pressed():  # Returns true if the M button is pressed
    button3_state = win32api.GetAsyncKeyState(0x4D)
    return bool(button3_state)
   
while True:
	while button1_pressed() and button2_pressed(): # No matter which one is pressed first to me
		print("do some")
		while button3_pressed(): # Only if it is pressed after button1 and button2 are pressed
			print("do some2")
			if button2_pressed() == 0:
				break # this only breaks the inner while loop
		break # added an extra break else it would just be stuck in an endless loop