文件:foo_module.py
#file: attempt1.py
import sys
from time import sleep
from importlib import reload
import foo_module # <-- import the entire module
print(sys.modules['foo_module']) #Lets see if the module is loaded
while True:
foo_module.foo()
#simulate a delay or a condition by when foo_module would have changed
sleep(2)
#should reload foo_module to get the latest
reload(foo_module)
文件:try1.py
<module 'foo_module' from 'D:\\pyth\\foo_module.py'>
Am foo v1
Am foo v1
Am foo v1 # I go in around this time and change the foo_module print statement to simulate update to a loaded module
Am foo v2 # Voila ! reload works !
Am foo v2
Am foo v2
输出:
#file: attempt2.py
import sys
from time import sleep
from importlib import reload
from foo_module import foo # <-- import specific item only
#Lets see if the module is loaded
print(sys.modules['foo_module'])
while True:
foo()
#simulate a delay or a condition by when foo_module would have changed
sleep(2)
#try to reload foo_module to get the latest
reload(foo_module) #FAILS !
这很好,并且按我的预期工作。 但是以下方法不起作用!
文件:try2.py
<module 'foo_module' from 'D:/pyth\\foo_module.py'> # <-- Module is loaded. isnt it ?
Am foo v1
Traceback (most recent call last):
File "D:/pyth/attempt2.py", line 10, in <module>
reload(foo_module)
NameError: name 'foo_module' is not defined
输出:
path
但是在两种情况下sys.modules似乎都包含foo_module的条目! 我想念什么?
答案 0 :(得分:1)
贷记https://stackoverflow.com/a/46814062/237105。
# Reload via sys.modules as it is not imported directly
reload(sys.modules['foo_module'])
# Then, reimport function
from foo_module import foo
您的总代码,已固定:
import sys
from time import sleep
from importlib import reload
from foo_module import foo # <-- import specific item only
print(sys.modules['foo_module'])
while True:
foo()
# simulate a delay or a condition by when foo_module would have changed
sleep(2)
# reload foo_module via sys.modules as it is not imported directly
reload(sys.modules['foo_module'])
# re-import foo to update it.
from foo_module import foo