如果將一個project中的所有程式碼都放在一個檔案裡，會增加編寫與維護的困難，同時也難以進行團隊合作。
將大文件拆分為多個檔案 (module) 的好處：
- Modules are reusable.
- 讓程式碼更為簡潔
- Files are more organized.
- 更易於維護
example 1
-
in ano_module.py
def one_func(): print("Hello from another module.") -
in try.py
from ano_module import one_func one_func() # Hello from another module.
example 2
-
in ano_module.py
def one_func(): print("Hello from another module.") def two_func(): print("Here's another function from another module.") -
in try.py
from ano_module import one_func, two_func def hello(): print("This is a hello.") one_func() # module裡的function hello() # try.py內部的function two_func() # module裡的function # Hello from another module. # This is a hello. # Here's another function from another module.
example 3
-
architecture
-
in some_code.py
def some_code(): print("We have some code.") -
in some_more_code.py
def here_is_some_more(): print("We got some more codes here.") -
in hello.py
def small_hello(): print("This is a small hello.") -
in try.py
from myPackage import some_code, some_more_code from myPackage.subPackage import hello some_code.some_code() some_more_code.here_is_some_more() hello.small_hello() # We have some code. # We got some more codes here. # This is a small hello.
pycache dir
執行import ...時，module.py中的內容會被轉為byte codes ，之後電腦可以直接執行，不須再重新讀，藉此增加運行速度。
