Fill the code to open the text file data_science in read mode using with statement and to print all the statements within the file. (Use single quotes and do not leave the blank spaces)

Here is the Python code to open a text file named 'data_science' in read mode using the 'with' statement and print all the lines within the file:

with open('data_science', 'r') as file:
    for line in file:
        print(line)

This code works as follows:

1. The with statement is used to wrap the execution of a block of code. It is generally used with file operations to ensure that the file is properly closed after its suite finishes, even if an exception is raised on the way. It simplifies exception handling by encapsulating common preparation and cleanup tasks.

2. open('data_science', 'r') opens the file 'data_science' in read mode ('r').

3. as file: assigns the opened file to the variable file.

4. The for loop iterates over each line in the file.

5. print(line) prints each line from the file.