Create pip.md

English/pip.md

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+**Using `pip` to Manage Packages** and **Running Your First Python Program** are essential steps in getting started with Python. Here’s how to do both effectively.
+
+---
+
+### **Using `pip` to Manage Packages**
+
+`pip` is Python's package manager. It allows you to install, update, and manage third-party libraries and tools, which you can use to extend Python's capabilities.
+
+1. **Installing a Package**
+   - To install a package, simply use the command:
+     ```shell
+     pip install <package_name>
+     ```
+   - **Example**: Install the popular `requests` library for handling HTTP requests.
+     ```shell
+     pip install requests
+     ```
+
+2. **Listing Installed Packages**
+   - You can see all installed packages and their versions with:
+     ```shell
+     pip list
+     ```
+   - **Example**:
+     ```
+     Package    Version
+     ---------- -------
+     requests   2.26.0
+     numpy      1.21.2
+     ```
+
+3. **Upgrading a Package**
+   - To update a package to the latest version, use:
+     ```shell
+     pip install --upgrade <package_name>
+     ```
+   - **Example**: Upgrade `requests` to the latest version.
+     ```shell
+     pip install --upgrade requests
+     ```
+
+4. **Uninstalling a Package**
+   - If you no longer need a package, you can uninstall it with:
+     ```shell
+     pip uninstall <package_name>
+     ```
+   - **Example**: Uninstall the `requests` package.
+     ```shell
+     pip uninstall requests
+     ```
+
+5. **Requirements File**:
+   - If you have a list of packages needed for a project, you can create a `requirements.txt` file, which contains all the packages and their versions.
+   - To install packages from this file, use:
+     ```shell
+     pip install -r requirements.txt
+     ```
+   - **Example** of `requirements.txt`:
+     ```
+     requests==2.26.0
+     numpy>=1.21
+     ```
+
+---
+
+### **Running Your First Python Program**
+
+1. **Write a Simple Python Program**
+   - Open your code editor (or a text editor) and create a new file named `hello.py`.
+   - Type the following code:
+     ```python
+     print("Hello, World!")
+     ```
+   - This is a simple program that prints “Hello, World!” to the screen.
+
+2. **Run the Program**
+   - Save the file and open a terminal or command prompt.
+   - Navigate to the directory where `hello.py` is saved. For example:
+     ```shell
+     cd path/to/your/file
+     ```
+   - Run the Python program by typing:
+     ```shell
+     python hello.py
+     ```
+   - **Output**:
+     ```
+     Hello, World!
+     ```
+
+3. **Running a Python Program with Input**
+   - Modify `hello.py` to ask for user input:
+     ```python
+     name = input("What's your name? ")
+     print(f"Hello, {name}!")
+     ```
+   - Run the program again:
+     ```shell
+     python hello.py
+     ```
+   - **Example Interaction**:
+     ```
+     What's your name? Alice
+     Hello, Alice!
+     ```
+
+4. **Using an Installed Package in Your Program**
+   - Let’s use the `requests` package we installed to make a simple HTTP request.
+   - Update `hello.py`:
+     ```python
+     import requests
+
+     response = requests.get("https://api.github.com")
+     print(response.status_code)
+     ```
+   - Run the program:
+     ```shell
+     python hello.py
+     ```
+   - **Output**:
+     ```
+     200
+     ```
+     (This indicates that the request was successful.)
+
+With these basics, you can now manage packages with `pip` and run simple programs in Python!