How do you display a file in python?
Open a File on the ServerAssume we have the following file, located in the same folder as Python: Show
demofile.txt Hello! Welcome to demofile.txt To open the file, use the built-in The Example f = open("demofile.txt",
"r") Run Example » If the file is located in a different location, you will have to specify the file path, like this: ExampleOpen a file on a different location: f = open("D:\\myfiles\welcome.txt", "r") Run Example » Read Only Parts of the FileBy default the ExampleReturn the 5 first characters of the file: f = open("demofile.txt", "r") Run Example » Read LinesYou can
return one line by using the ExampleRead one line of the file: f = open("demofile.txt", "r") Run Example » By calling ExampleRead two lines of the file: f = open("demofile.txt",
"r") Run Example » By looping through the lines of the file, you can read the whole file, line by line: ExampleLoop through the file line by line: f = open("demofile.txt", "r") Run Example » Close FilesIt is a good practice to always close the file when you are done with it. ExampleClose the file when you are finish with it: f = open("demofile.txt", "r") Run Example » Note: You should always close your files, in some cases, due to buffering, changes made to a file may not show until you close the file. How to read and print the content of a txt fileAssume you got a file called file.txt that you want to read in a program and the content is this:
You can read this content: write the following script in notepad:
save it as readfile.py for example, in the same folder of the txt file. Then you run it (shift + right click of the mouse and select the prompt from the contextual menu) writing in the prompt: C:\examples> python readfile.py You should get this. Play attention to the word, they have to be written just as you see them and to the indentation. It is important in python. Use always the same indentation in each file (4 spaces are good).
Problem FormulationGiven the path to a text file such as How to read all the content from the file and print it to the Python standard output? Standard File Reading and PrintingThe standard approach to read the contents from a file and print them to the standard output works in four steps:
Let’s dive into each of those four steps next. Here’s how this whole process looks like on my computer:
Step 1: Open the file for reading using the built-in f = open('/path/to/file.txt', 'r') Step 2: Read the whole textual content from the
file using the content = f.read() Step 3: Print the file content by passing the content variable into the built-in print(content) Step 4: Close the file to clean up your code. This is a good practice according to the Python standard. f.close() Taken together, the proper code to read the contents of a text file and print it to the standard output looks like this: f = open('/path/to/file.txt', 'r') content = f.read() print(content) f.close() Please note that you need to replace the string Do you need some more background? No problem, watch my in-depth tutorial about Python’s
Python open() Function – An 80/20 Guide by Example How to Read all Lines of a File into a List (One-Liner)?You can also read all lines of a file into a list using only a single line of code: print([line.strip() for line in open("file.txt")]) To learn how this works, visit my in-depth blog article or watch the following video tutorial: Python One-Liners - Trick 2 Read File and Strip() Lines How to Read a File Line-By-Line and Store Into a List?A more conservative, and more readable approach of achieving this is given in the following code snippet: with open('file.txt') as f: content = f.readlines() # Remove whitespace characters like '\n' at the end of each line lines = [x.strip() for x in content] print(lines) You can see this in action in this blog tutorial and the following video guide: How to Read a File Line By Line and Store Into a List Hey, you’ve read over the whole article—I hope you learned something today! To make sure your learning habit stays intact, why not download some Python cheat sheets and join our free email academy with lots of free Python tutorials? While working as a researcher in distributed systems, Dr. Christian Mayer found his love for teaching computer science students. To help students reach higher levels of Python success, he founded the programming education website Finxter.com. He’s author of the popular programming book Python One-Liners (NoStarch 2020), coauthor of the Coffee Break Python series of self-published books, computer science enthusiast, freelancer, and owner of one of the top 10 largest Python blogs worldwide. His passions are writing, reading, and coding. But his greatest passion is to serve aspiring coders through Finxter and help them to boost their skills. You can join his free email academy here. How do you read and display a file in Python?Python File Open. ❮ Previous Next ❯. f = open("demofile.txt", "r") print(f.read()) ... . Open a file on a different location: ... . Return the 5 first characters of the file: ... . Read one line of the file: ... . Read two lines of the file: ... . Loop through the file line by line: ... . Close the file when you are finish with it:. How do you display file names in Python?Python Program to Get the File Name From the File Path. import os # file name with extension file_name = os.path.basename('/root/file.ext') # file name without extension print(os.path.splitext(file_name)[0]) Run Code.. import os print(os.path.splitext(file_name)) ... . from pathlib import Path print(Path('/root/file.ext').stem). How do I print and open a text file in Python?Taken together, the proper code to read the contents of a text file and print it to the standard output looks like this:. f = open('/path/to/file.txt', 'r'). content = f. read(). print(content). f. close(). How do you print a file in Python?How to print the contents of a file in Python. a_file = open("fdr_inaugural_address.txt"). file_contents = a_file. read(). print(file_contents). |