解釋Python中的monkey patching是什麼意思？

Monkey patching is the technique of dynamic modification of a piece of code at the run time. Actually by doing monkey patch we change the behavior of code but without affecting the originalsource .

歷史

Monkey patch（猴子補丁）一詞源自於遊擊補丁（guerrilla patch），guerrilla幾乎意味著大猩猩，可以定義猴子物種。遊擊補丁指的是秘密地進行變更。但是猴子補丁聽起來更容易發音，所以現在被稱為“Monkey patch”。在「Monkey-patch」一詞中，monkey定義了dynamic（動態）這個字。

Monkey patching in python

Monkey patching in python refers to modifying or updating a piece of code or class or any module at the runtime. In simple words, we can change the behavior or working of a class/ module at the runtime at sooo . But sometimes monkey patching is considered bad practice because the definition of object does not accurately describe how the object is behaving in the code.

Example

class first:
   def print(self)
      print(“hello world”)

輸出

If we run the above code it will generate the following output −

Hello world

代碼猴子補丁後

Example

Import monkey
def monkey_function(self):
   print(“Hello world”)
# updating the print() with monkey_function()
monkey.A.print = monkey_function

# revoking method print() as method monkey_function()
obj = monkey.A()
obj print()

輸出

If we run the above code it will generate the following output −

Hello world

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