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1. Python Introduction
1.1 What Is Python?
Python is a popular programming language. It was created by
Guido van Rossum, and released in 1991.
It is used for:
- web development (server-side),
- software development,
- mathematics,
- system scripting.
1.2 Python Install
Many PCs and Macs will have python already installed.
To check if you have python installed on a Windows PC,
run the following on the Command Line (cmd.exe):
- Press Window key + R, to open the Run window
- Type cmd into the input box, press Enter
- In the command line, type python --version or py --version
- If the version is displayed (eg, Python 3.9.2),
It means Python have installed
- If you find that you do not have Python installed on your computer,
then you can download it for free from the following website:
https://www.python.org/. After downloading, install it like a normal program.
1.3 The First Program
Let's write our first Python file, called helloworld.py, which can be done in
any text editor (eg, Notepad).
- Open the Run window, type notepad to open the Notepad
- Type the Python’s command:
print(“hi bac Teo”)
- Save the file named helloworld.py
- Open the command line, reach the folder where the helloworld.py
have saved, type python helloworld.py or py helloworld.py
It means hi Python, please run the helloworld.py file.
- The output should read:
hi bac Teo
Congratulations, you have written and executed your first Python program.
1.4 Exercise
Question 1.1 What is the correct file extension for Python files?
A. .pp
B. .pt
C. .ppt
D. .py
Question 1.2 What is the correct command line syntax for
checking if Python is installed on your computer?
A. python ##version
B. python version
C. python --version or py --version
D. python ?version
Practice 1.3: Personal Information
[Create a folder to save all practices, example: pythonLabs]
Task: Write a Python program that uses the print() function to display your full name, age, and class in three separate lines.
Example Output:
Nguyen Van An
11
6A1
Requirements:
- Use three separate print() statements.
- Replace the example information with your own.
Practice 1.4: Formatted Output
Task: Write a Python program that uses a single print() function to display your full name, age, and class in a single line, separated by commas and spaces.
Example Output:
Nguyen Van An, 11, 6A1
Requirements:
- Use only one print() statement.
- Use commas inside the print function to make the desired output.
- Replace the example information with your own.
Remember to save your programs as .py files (e.g., practice1_3.py and practice1_4.py). Good luck, and I look forward to seeing your work!
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Cập nhật: 28/8/2024
Bài sau: Python căn bản (2): Syntax
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