python read data from file into array
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Certainly! In Python, reading data from a file into an array is a common task. There are various ways to achieve this, and in this tutorial, we will explore how to read data from a file and store it in a Python array using the open() function and the readlines() method.
Let's start by creating a sample text file named data.txt with some sample data:
data.txt
Now, let's write a Python script to read the data from the file and store it in an array.
Open the File: Use the open() function to open the file in read mode ('r'). The with statement is used to ensure that the file is properly closed after reading.
Read Lines into Array: Use the readlines() method to read all lines from the file into a list. We then use a list comprehension to convert each line to an integer and remove any leading or trailing whitespace.
Close the File: The with statement automatically closes the file, but if you open it without the with statement, it's good practice to close the file using the close() method.
Display the Array: Finally, print the array containing the data read from the file.
Save the script with a .py extension (e.g., read_file_into_array.py) and run it. You should see the data array printed as output.
This example demonstrates a simple way to read data from a file into a Python array. Depending on the file format (e.g., CSV, JSON), you might need to use different methods for reading and parsing the data.
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