Creating a new file, filename contains loop variable, python
Sep 24, 2012 · I want to run a function over a loop and I want to store the outputs in different files, such that the filename contains the loop variable. Here is an example. f = open("file_i.dat",'w') f.write(str(func(i)) f.close() How can I do it in python? Simply construct the file name with + and str.
Python Loop through Folders and Files in Directory
Sep 19, 2024 · Python to Loop Through Files Using os.walk() method. In this example, the Python script employs the 'os' module and 'os.walk' function to recursively traverse through the specified directory and its subdirectories. For each file encountered, it opens and prints the content along with the file name.
Python: read all text file lines in loop - Stack Overflow
Jul 30, 2013 · The simplest way to read a file one line at a time is this: for line in open('fileName'): if 'str' in line: break No need for a with-statement or explicit close. Notice no variable 'f' that refers to the file. In this case python assigns the result of the open() to a hidden, temporary variable.
for loop - Python creating a file and adding numbers - Stack Overflow
Nov 6, 2014 · num = 19 for x in range(1, num+1): with open file(''.join(['file_', str(x), '.txt'], 'w') as the_file: file.write(''.join([str(x), '\n', str(num-x+1)])
Read a file line by line in Python - GeeksforGeeks
Jan 2, 2025 · In this article, we are going to study reading line by line from a file. Example. An iterable object is returned by open () function while opening a file. This final way of reading a file line-by-line includes iterating over a file object in a loop.
5 Ways in Python to loop Through Files in Directory
Aug 10, 2021 · Python provide five different methods to loop through files in a directory. os.listdir(), os.scandir(), pathlib module, os.walk(), and globe
File Handling in Python - GeeksforGeeks
Jan 14, 2025 · User – friendly : Python provides a user-friendly interface for file handling, making it easy to create, read and manipulate files. Cross-platform : Python file-handling functions work across different platforms (e.g. Windows, Mac, Linux), allowing for …
Tutorial: Iterate Over Files in a Directory Using Python - Pierian …
Mar 23, 2023 · File iteration in Python involves looping through a directory or folder and performing operations on each file found. In this blog post, we’ll explore the different methods of iterating files in Python, and provide examples that illustrate how to use each method.
python - How can I iterate over files in a given directory? - Stack ...
Apr 30, 2012 · Here's how I iterate through files in Python: import os path = 'the/name/of/your/path' folder = os.fsencode(path) filenames = [] for file in os.listdir(folder): filename = os.fsdecode(file) if filename.endswith( ('.jpeg', …
Python Loop Through Files in a Directory - TechBeamers
Jul 15, 2024 · To loop through files in a directory, you can use os.listdir() to get a list of filenames and then iterate through them. Python Code: print(file) Also Check: Python List All Files in a Directory. Starting from Python 3.5, the os.scandir() function provides a more efficient way to loop through files and directories. Python Code: print(file.name)