os.listdir()
时间: 2023-10-06 18:10:23 浏览: 51
os.listdir()是Python内置函数之一,用于获取指定目录下的所有文件和子目录的名称列表。它的使用方法如下:
```python
import os
# 获取当前工作目录下的所有文件和子目录的名称列表
files = os.listdir()
print(files)
# 获取指定路径下的所有文件和子目录的名称列表
path = "/home/user/documents"
files = os.listdir(path)
print(files)
```
其中,第一个例子获取的是当前工作目录下的所有文件和子目录的名称列表,而第二个例子获取的则是指定路径下的所有文件和子目录的名称列表。
相关问题
os.listdir
os.listdir() 是 Python 中的一个函数,用于获取指定目录下的所有文件和子目录的名称列表。它的语法为:
```python
os.listdir(path)
```
其中,path 是指定的目录路径,如果不指定则默认为当前工作目录。函数返回一个包含指定目录下所有文件和子目录名称的列表。注意,在某些操作系统中,系统可能会自动添加一些特殊的文件或目录名称,如 "." 和 "..",这些名称也会被包含在返回结果中。
os.walk os.listdir
`os.walk` and `os.listdir` are both Python functions used to traverse directories and retrieve information about the files and subdirectories within them.
`os.walk` is a generator function that returns a tuple of three values for each directory it traverses: the path of the directory, a list of the subdirectories within that directory, and a list of the files within that directory. This function is often used to recursively traverse a directory tree and perform operations on all the files and directories within it.
Here's an example of using `os.walk` to print out the names of all the files in a directory tree:
```
import os
root_dir = '/path/to/root/dir'
for dirpath, dirnames, filenames in os.walk(root_dir):
for filename in filenames:
print(os.path.join(dirpath, filename))
```
`os.listdir`, on the other hand, is a simpler function that returns a list of all the files and directories within a given directory. It does not recursively traverse subdirectories, but only returns the names of the files and directories within the specified directory.
Here's an example of using `os.listdir` to print out the names of all the files in a directory:
```
import os
dir_path = '/path/to/dir'
for filename in os.listdir(dir_path):
if os.path.isfile(os.path.join(dir_path, filename)):
print(filename)
```
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