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I recently wanted to try building a web application using Python on IBM Bluemix, so I decided to set up a local Python web development environment.
Understanding the Python Version
When I visited the official Python website and hovered over the "Downloads" section in the navigation bar, I noticed two main version links available for download.
[Image: Python Web Development Environment Setup Notes under Windows 7]
What's the difference between these two versions?
From my understanding, Python 2.7.x is a more stable version that has been widely used for many years, while Python 3.x is a newer, more modern version with improved features and syntax. However, if you're starting a new project, choosing between them isn't a big issue, as most Python libraries support both versions. That said, there are some key differences between 2.7.x and 3.x that should be considered. You can refer to the summary of important differences between the two versions for more details.
Downloading Python
Since Bluemix does not specify a particular version, I opted to install Python 2.7.10 by default. My operating system is Windows 7 64-bit, so I needed to download the 64-bit installer. Clicking the image below will take you to the Python download page.
[Image: Python Web Development Environment Setup Notes under Windows 7]
Installing Python
After downloading the installation package, I ran it. One important step during the installation was selecting the option to add Python to the system PATH. If this is not done, you may encounter issues later, as shown in the following image.
[Image: Python Web Development Environment Setup Notes under Windows 7]
[Image: Python Web Development Environment Setup Notes under Windows 7]
The installation process then continued. During the setup, a command prompt window might pop up briefly and close automatically.
[Image: Python Web Development Environment Setup Notes under Windows 7]
[Image: Python Web Development Environment Setup Notes under Windows 7]
Once the installation was complete, I opened the command line and typed "python" followed by Enter to verify the installation. The result was displayed as expected.
[Image: Python Web Development Environment Setup Notes under Windows 7]
Understanding Pip
Pip is a tool used to install and manage Python packages, and it replaces the older easy_install. Some online articles mentioned that pip needs to be installed separately, but after the installation steps above, pip was already included.
Choosing a Python IDE
What is an IDE?
IDE stands for Integrated Development Environment, which is a software application that provides comprehensive facilities to programmers for software development. A Python IDE is simply an integrated development environment tailored for Python programming.
In the Start Menu > Programs > Python 2.7, I found several options, including the Python IDLE. Opening it gives a basic interface, but the built-in command line is quite limited — it doesn’t support keyboard navigation or history recall.
[Image: Python Web Development Environment Setup Notes under Windows 7]
Testing the Environment
To test the environment, I tried running a simple "Hello World" program.
[Image: Python Web Development Environment Setup Notes under Windows 7]
I pasted the following code into the editor:
```python
#!/usr/bin/python
# -*- coding: UTF-8 -*-
print 'hello world'
for i in range(1,5):
for j in range(1,5):
print i, j
```
This simple script prints "hello world" and then loops through numbers from 1 to 4, displaying their combinations. It worked perfectly, confirming that the Python environment was properly set up.
Overall, setting up a Python development environment on Windows 7 was straightforward once I understood the steps involved. It’s always a good idea to choose a version that aligns with your project requirements and to ensure all necessary tools like pip and an IDE are properly configured.