打包具有多处理代码的python模块

Question

我正在尝试使用pyinstaller将我的python项目打包为可执行文件。主模块包含用于多处理的代码。当我运行可执行文件时，只有在多处理部分之前的代码行会被一次又一次地执行。它也不会抛出异常或退出程序。

主模块中的代码：

from Framework.ExcelUtility import ExcelUtility
from Framework.TestRunner import TestRunner
import concurrent.futures

class Initiator:
def __init__(self):
self.exec_config_dict = {}
self.test_list = []
self.test_names = []
self.current_test_set = []
def set_first_execution_order(self):
# Code

def set_subsequent_execution_order(self):
# Code
def kick_off_tests(self):
'''Method to do Multi process execution'''
if(__name__=="__main__"):
with concurrent.futures.ProcessPoolExecutor(max_workers=int(self.exec_config_dict.get('Parallel'))) as executor:
for test in self.current_test_set:
executor.submit(TestRunner().runner,test)  ***This line is not being executed from the exe file.

initiator = Initiator()
initiator.get_run_info()
initiator.set_first_execution_order()
initiator.kick_off_tests()
while len(initiator.test_list) > 0:
initiator.set_subsequent_execution_order()
try:
initiator.kick_off_tests()
except BaseException as exception:
print(exception)

Answer 1

根据问题定义，我假设您使用的是ms windows，并且主模块不命名为__main__.py。

在这种情况下，multiprocessing有一些特殊的指导方针：

确保新的Python解释器可以安全地导入主模块，而不会产生意外的副作用(例如启动新进程(。

和

相反，应该使用if __name__ == '__main__'来保护程序的"入口点">

所以，像这样更改主模块的最后一部分：

from multiprocessing import freeze_support
def kick_off_tests(self):
'''Method to do Multi process execution'''
with concurrent.futures.ProcessPoolExecutor(max_workers=int(self.exec_config_dict.get('Parallel'))) as executor:
for test in self.current_test_set:
executor.submit(TestRunner().runner,test)  

if __name__ == '__main__':
freeze_support()
initiator = Initiator()
initiator.get_run_info()
initiator.set_first_execution_order()
initiator.kick_off_tests()
while len(initiator.test_list) > 0:
initiator.set_subsequent_execution_order()
try:
initiator.kick_off_tests()
except BaseException as exception:
print(exception)