Path class in Python

首先得導入os 模塊,path 類屬於os模塊.

1. Joinmethod to create path

To join two or more path components together,首先導入 python 的 os 模塊,Then use the following：

import os
myPath = os.path.join('C:\\','a', 'b', 'c')
print(myPath)

輸出字符串：C:\a\b\c

使用 os.path The advantage is that it allows the code to remain compatible on all operating systems,Because it uses the appropriate separator for the platform it is running on.

2. Path string manipulation

p = os.path.join(os.getcwd(),'demo.txt')
print(p)

輸出：D:\PyCODE\Basicknowledge\demo.txt

print(os.path.dirname(p))

輸出：D:\PyCODE\Basicknowledge

print(os.path.basename§)

輸出：demo.txt

print(os.path.split(p))

輸出： (‘D:\PyCODE\Basicknowledge’, ‘demo.txt’)

print(os.path.splitext(p))

輸出：(‘D:\PyCODE\Basicknowledge\demo’, ‘.txt’)

print(os.path.splitext(os.path.basename(p)))

輸出：(‘demo’, ‘.txt’)

3. 判斷路徑是否存在

if(os.path.exists(p)):
print('Exist')
else:
print("Not")

使用函數 exists() 方法

4. Determines whether the path is a path or a file

ph =r'D:\PyCODE\Basicknowledge'
print(ph)
print(os.path.isdir(ph))

fph = os.path.join(ph, 'demo.txt')
fph = ph+"\\demo.txt"
print(fph)
print(os.path.isfile(fph))

5. 相對路徑和絕對路徑

p1 = os.getcwd()
print(p1)

輸出： D:\PyCODE\Basicknowledge

print(os.path.abspath("test"))

輸出：D:\PyCODE\Basicknowledge\test

print(os.path.abspath("../test"))

輸出：D:\PyCODE\test

print(os.path.abspath("/test"))

輸出：D:\test