In Python you can use variables to store data. In Python you can use conditional statements like if, else, and elif to make decisions in your code. In Python you can use loops like for and while to repeat code. In Python you can use functions to organize your code and make it reusable. In Python you can work with different data types, including strings, numbers, and lists.

存储 learning_python.txt

with open('learning_python.txt', 'w') as file_object: file_object.write("In Python you can use variables to store data.\n") file_object.write("In Python you can use conditional statements like if, else, and elif to make decisions in your code.\n") file_object.write("In Python you can use loops like for and while to repeat code.\n") file_object.write("In Python you can use functions to organize your code and make it reusable.\n") file_object.write("In Python you can work with different data types, including strings, numbers, and lists.\n")

读取并打印文件

filename = 'learning_python.txt'

print("Printing the entire file:") with open(filename) as file_object: contents = file_object.read() print(contents)

print("\nPrinting line by line:") with open(filename) as file_object: for line in file_object: print(line.rstrip())

print("\nPrinting lines in a list:") with open(filename) as file_object: lines = file_object.readlines()

for line in lines: print(line.rstrip().replace('Python', 'C')