How to run a Python script inside another script and close itself immediately











up vote
-2
down vote

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I have a login frame and a main frame that made from pyqt.
I want to run the main command after I clicked the button and when the main frame runs close the login frame.



I wrote a def for clicking button but when the command executed the main frame still waits until I close the main window.



This is the function of clicking the button:



def ButtonClicked(self):

os.system('py Main.py')
self.os.exit()


How can I make it close immediately and not wait for main.py to exit?










share|improve this question
























  • start "" py Main.py
    – Peter Wood
    Nov 20 at 10:47










  • i dont get it what is the start
    – ghostDs
    Nov 20 at 10:51










  • os.system('start "" py Main.py')
    – Peter Wood
    Nov 20 at 11:12










  • @PeterWood thanks alot it worked ,but i have a little bug that is when the os.system('start "" py Main.py') runs the console start but not comes popop. i should press it on taskbar to show
    – ghostDs
    Nov 20 at 11:28

















up vote
-2
down vote

favorite












I have a login frame and a main frame that made from pyqt.
I want to run the main command after I clicked the button and when the main frame runs close the login frame.



I wrote a def for clicking button but when the command executed the main frame still waits until I close the main window.



This is the function of clicking the button:



def ButtonClicked(self):

os.system('py Main.py')
self.os.exit()


How can I make it close immediately and not wait for main.py to exit?










share|improve this question
























  • start "" py Main.py
    – Peter Wood
    Nov 20 at 10:47










  • i dont get it what is the start
    – ghostDs
    Nov 20 at 10:51










  • os.system('start "" py Main.py')
    – Peter Wood
    Nov 20 at 11:12










  • @PeterWood thanks alot it worked ,but i have a little bug that is when the os.system('start "" py Main.py') runs the console start but not comes popop. i should press it on taskbar to show
    – ghostDs
    Nov 20 at 11:28















up vote
-2
down vote

favorite









up vote
-2
down vote

favorite











I have a login frame and a main frame that made from pyqt.
I want to run the main command after I clicked the button and when the main frame runs close the login frame.



I wrote a def for clicking button but when the command executed the main frame still waits until I close the main window.



This is the function of clicking the button:



def ButtonClicked(self):

os.system('py Main.py')
self.os.exit()


How can I make it close immediately and not wait for main.py to exit?










share|improve this question















I have a login frame and a main frame that made from pyqt.
I want to run the main command after I clicked the button and when the main frame runs close the login frame.



I wrote a def for clicking button but when the command executed the main frame still waits until I close the main window.



This is the function of clicking the button:



def ButtonClicked(self):

os.system('py Main.py')
self.os.exit()


How can I make it close immediately and not wait for main.py to exit?







python pyqt5






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 20 at 12:29









usr2564301

17.5k73270




17.5k73270










asked Nov 20 at 10:41









ghostDs

85




85












  • start "" py Main.py
    – Peter Wood
    Nov 20 at 10:47










  • i dont get it what is the start
    – ghostDs
    Nov 20 at 10:51










  • os.system('start "" py Main.py')
    – Peter Wood
    Nov 20 at 11:12










  • @PeterWood thanks alot it worked ,but i have a little bug that is when the os.system('start "" py Main.py') runs the console start but not comes popop. i should press it on taskbar to show
    – ghostDs
    Nov 20 at 11:28




















  • start "" py Main.py
    – Peter Wood
    Nov 20 at 10:47










  • i dont get it what is the start
    – ghostDs
    Nov 20 at 10:51










  • os.system('start "" py Main.py')
    – Peter Wood
    Nov 20 at 11:12










  • @PeterWood thanks alot it worked ,but i have a little bug that is when the os.system('start "" py Main.py') runs the console start but not comes popop. i should press it on taskbar to show
    – ghostDs
    Nov 20 at 11:28


















start "" py Main.py
– Peter Wood
Nov 20 at 10:47




start "" py Main.py
– Peter Wood
Nov 20 at 10:47












i dont get it what is the start
– ghostDs
Nov 20 at 10:51




i dont get it what is the start
– ghostDs
Nov 20 at 10:51












os.system('start "" py Main.py')
– Peter Wood
Nov 20 at 11:12




os.system('start "" py Main.py')
– Peter Wood
Nov 20 at 11:12












@PeterWood thanks alot it worked ,but i have a little bug that is when the os.system('start "" py Main.py') runs the console start but not comes popop. i should press it on taskbar to show
– ghostDs
Nov 20 at 11:28






@PeterWood thanks alot it worked ,but i have a little bug that is when the os.system('start "" py Main.py') runs the console start but not comes popop. i should press it on taskbar to show
– ghostDs
Nov 20 at 11:28














1 Answer
1






active

oldest

votes

















up vote
1
down vote













Not sure if your approach is the best here, but just to answer your specific question: os.system is not the right function here since it waits for the output of the call before continuing (as you might have noticed...). Try to "spawn" a process and tell Python not to wait for any result with something like this:



os.spawnl(os.P_DETACH, 'py Main.py')




EDIT



Given the comments I'll change the answer a bit. To use spawnl in a "with path" mode you have to add a p at the end (spawnlp()). Although the os.system and os.spawn** provide basic functionality, the docs refer to the subprocess library for better control. It makes stuff a little more complicated but I think this example does what you ask for:



import sys
import subprocess

# Constant for detaching a process
DETACHED_PROCESS = 0x00000008

# Start the process and get its PID
pid = subprocess.Popen(["python", "you_second_script.py"], close_fds=True, creationflags=DETACHED_PROCESS).pid
print(pid)

# The end of this script, the started process will continue
sys.exit()





share|improve this answer























  • os.spawnl doesn't use PATH to locate py
    – Peter Wood
    Nov 20 at 19:50












  • thanks for the answer , but @PeterWood answer helped me through this
    – ghostDs
    Nov 22 at 8:24











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
1
down vote













Not sure if your approach is the best here, but just to answer your specific question: os.system is not the right function here since it waits for the output of the call before continuing (as you might have noticed...). Try to "spawn" a process and tell Python not to wait for any result with something like this:



os.spawnl(os.P_DETACH, 'py Main.py')




EDIT



Given the comments I'll change the answer a bit. To use spawnl in a "with path" mode you have to add a p at the end (spawnlp()). Although the os.system and os.spawn** provide basic functionality, the docs refer to the subprocess library for better control. It makes stuff a little more complicated but I think this example does what you ask for:



import sys
import subprocess

# Constant for detaching a process
DETACHED_PROCESS = 0x00000008

# Start the process and get its PID
pid = subprocess.Popen(["python", "you_second_script.py"], close_fds=True, creationflags=DETACHED_PROCESS).pid
print(pid)

# The end of this script, the started process will continue
sys.exit()





share|improve this answer























  • os.spawnl doesn't use PATH to locate py
    – Peter Wood
    Nov 20 at 19:50












  • thanks for the answer , but @PeterWood answer helped me through this
    – ghostDs
    Nov 22 at 8:24















up vote
1
down vote













Not sure if your approach is the best here, but just to answer your specific question: os.system is not the right function here since it waits for the output of the call before continuing (as you might have noticed...). Try to "spawn" a process and tell Python not to wait for any result with something like this:



os.spawnl(os.P_DETACH, 'py Main.py')




EDIT



Given the comments I'll change the answer a bit. To use spawnl in a "with path" mode you have to add a p at the end (spawnlp()). Although the os.system and os.spawn** provide basic functionality, the docs refer to the subprocess library for better control. It makes stuff a little more complicated but I think this example does what you ask for:



import sys
import subprocess

# Constant for detaching a process
DETACHED_PROCESS = 0x00000008

# Start the process and get its PID
pid = subprocess.Popen(["python", "you_second_script.py"], close_fds=True, creationflags=DETACHED_PROCESS).pid
print(pid)

# The end of this script, the started process will continue
sys.exit()





share|improve this answer























  • os.spawnl doesn't use PATH to locate py
    – Peter Wood
    Nov 20 at 19:50












  • thanks for the answer , but @PeterWood answer helped me through this
    – ghostDs
    Nov 22 at 8:24













up vote
1
down vote










up vote
1
down vote









Not sure if your approach is the best here, but just to answer your specific question: os.system is not the right function here since it waits for the output of the call before continuing (as you might have noticed...). Try to "spawn" a process and tell Python not to wait for any result with something like this:



os.spawnl(os.P_DETACH, 'py Main.py')




EDIT



Given the comments I'll change the answer a bit. To use spawnl in a "with path" mode you have to add a p at the end (spawnlp()). Although the os.system and os.spawn** provide basic functionality, the docs refer to the subprocess library for better control. It makes stuff a little more complicated but I think this example does what you ask for:



import sys
import subprocess

# Constant for detaching a process
DETACHED_PROCESS = 0x00000008

# Start the process and get its PID
pid = subprocess.Popen(["python", "you_second_script.py"], close_fds=True, creationflags=DETACHED_PROCESS).pid
print(pid)

# The end of this script, the started process will continue
sys.exit()





share|improve this answer














Not sure if your approach is the best here, but just to answer your specific question: os.system is not the right function here since it waits for the output of the call before continuing (as you might have noticed...). Try to "spawn" a process and tell Python not to wait for any result with something like this:



os.spawnl(os.P_DETACH, 'py Main.py')




EDIT



Given the comments I'll change the answer a bit. To use spawnl in a "with path" mode you have to add a p at the end (spawnlp()). Although the os.system and os.spawn** provide basic functionality, the docs refer to the subprocess library for better control. It makes stuff a little more complicated but I think this example does what you ask for:



import sys
import subprocess

# Constant for detaching a process
DETACHED_PROCESS = 0x00000008

# Start the process and get its PID
pid = subprocess.Popen(["python", "you_second_script.py"], close_fds=True, creationflags=DETACHED_PROCESS).pid
print(pid)

# The end of this script, the started process will continue
sys.exit()






share|improve this answer














share|improve this answer



share|improve this answer








edited Nov 22 at 7:20

























answered Nov 20 at 12:25









Gijs Wobben

365




365












  • os.spawnl doesn't use PATH to locate py
    – Peter Wood
    Nov 20 at 19:50












  • thanks for the answer , but @PeterWood answer helped me through this
    – ghostDs
    Nov 22 at 8:24


















  • os.spawnl doesn't use PATH to locate py
    – Peter Wood
    Nov 20 at 19:50












  • thanks for the answer , but @PeterWood answer helped me through this
    – ghostDs
    Nov 22 at 8:24
















os.spawnl doesn't use PATH to locate py
– Peter Wood
Nov 20 at 19:50






os.spawnl doesn't use PATH to locate py
– Peter Wood
Nov 20 at 19:50














thanks for the answer , but @PeterWood answer helped me through this
– ghostDs
Nov 22 at 8:24




thanks for the answer , but @PeterWood answer helped me through this
– ghostDs
Nov 22 at 8:24


















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