14 Apr How Do I Read And Write Files In Python?
To read and write files in Python, you can use the built-in open() function. Here are some examples:
- Reading a file:
# Open the file in read-only mode
file = open('example.txt', 'r')
# Read the contents of the file
contents = file.read()
# Close the file
file.close()
# Print the contents
print(contents)
In this example, we open the file example.txt in read-only mode using the open() function. We then use the read() method to read the contents of the file into a string variable. Finally, we close the file using the close() method and print the contents.
- Writing to a file:
# Open the file in write mode
file = open('example.txt', 'w')
# Write some text to the file
file.write('Hello, world!')
# Close the file
file.close()
In this example, we open the file example.txt in write mode using the open() function. We then use the write() method to write the string 'Hello, world!' to the file. Finally, we close the file using the close() method.
It’s important to note that when you open a file for writing using the 'w' mode, it will overwrite the existing file if it exists. If you want to append to an existing file instead, you can use the 'a' mode:
# Open the file in append mode
file = open('example.txt', 'a')
# Append some text to the file
file.write('\nThis is a new line!')
# Close the file
file.close()
In this example, we open the file example.txt in append mode using the 'a' mode. We then use the write() method to append the string '\nThis is a new line!' to the end of the file (note the newline character \n at the beginning of the string). Finally, we close the file using the close() method.
Latest Topic
-
Cloud-Native Technologies: Best Practices
20 April, 2024 -
Generative AI with Llama 3: Shaping the Future
15 April, 2024 -
Mastering Llama 3: The Ultimate Guide
10 April, 2024
No Comments