python路徑拼接os.path.join()函式的用法

1.如果各元件名首字母不包含’/’，則函式會自動加上

　　　　　　　2.如果有一個元件是一個絕對路徑，則在它之前的所有元件均會被捨棄

　　　　　　　3.如果最後一個元件為空，則生成的路徑以一個’/’分隔符結尾

Demo1

import os

Path1 = 'home'
Path2 = 'develop'
Path3 = 'code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print ('Path10 = ',Path10)
print ('Path20 = ',Path20)

輸出

Path10 = homedevelopcode
Path20 = home\develop\code

--------------------------------------------------------------

Demo2

import os

Path1 = '/home'
Path2 = 'develop'
Path3 = 'code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print ('Path10 = ',Path10)
print ('Path20 = ',Path20)
輸出

Path10 = /homedevelopcode
Path20 = /home\develop\code

--------------------------------------------------------------

Demo3

import os

Path1 = 'home'
Path2 = '/develop'
Path3 = 'code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print ('Path10 = ',Path10)
print ('Path20 = ',Path20)

輸出

Path10 = home/developcode
Path20 = /develop\code

--------------------------------------------------------------

Demo4

import os

Path1 = 'home'
Path2 = 'develop'
Path3 = '/code'

Path10 = Path1 + Path2 + Path3
Path20 = os.path.join(Path1,Path2,Path3)
print ('Path10 = ',Path10)
print ('Path20 = ',Path20 )

輸出

Path10 = homedevelop/code
Path20 = /code