How to use Python os and os.path modules
In this article, the editor introduces in detail "how to use Python os and os.path modules". The content is detailed, the steps are clear, and the details are handled properly. I hope this article "how to use Python os and os.path modules" can help you solve your doubts.
1. Purpose: to achieve reading only files with the extension xlsx in Python
Solution:
Use the os module.
The solution is as follows:
1. Determine the directory
2. Loop through each file
3. Filter files that meet the conditions and read data
The specific code is as follows:
Import os# 1. First define the path filepath = 'E:/old/ work / database table' # 2, loop through each file under the path for filename in os.listdir (filepath): # 3, list the files in the file ending with .xlsx if filename.endswith (('.xlsx')): print (filename)
The results are as follows:
2. Purpose: to use Python to traverse the files in each folder under the specified directory
Solution:
Using the join method of the os.path module
The solution is as follows:
1. Define a function and use this function to iterate through it to specify all subfolders under the directory
2. Call the function to view all the files
Specific code:
Def get_filelist (dir,Filelist): if os.path.isfile (dir): # determine whether path is a file Filelist.append (dir) # add a path to the list elif os.path.isdir (dir): # determine whether the path is a directory for s in os.listdir (dir): # traverse every file in the directory new_dir = os.path.join (dir S) get_filelist (new_dir,Filelist) # call the defined function return Filelist list_ = get_filelist ('E:/old/ work / database table', []) print (len (list_)) for l in list_: print (l)
The results are as follows:
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