如何在PyCharm中运行Python脚本并进入Python Shell执行交互命令？

Got it, let's walk through exactly how to do this step by step, including a heads-up about a common issue you'll hit with the addition part:

Step 1: Save Your Code in PyCharm #

• First, create a new Python file in your PyCharm project (right-click your project → New → Python File) — name it something like point_class.py.
• Paste your code into this file:

class Point:
    def __init__(self, x = 0, y = 0):
        self.x = x
        self.y = y
    # Define __str__() method in our class can control how it gets printed.
    def __str__(self):
        return "({0},{1})".format(self.x, self.y)

Step 2: Launch Python Shell with Your Class Loaded #

You have two easy ways to do this in PyCharm:

Option 1: Use PyCharm's Built-in Python Console #

• At the bottom of your PyCharm window, click the Python Console tab (if you don't see it, go to View → Tool Windows → Python Console).
• The console will load your project's Python interpreter. To import your Point class, run this command:

  from point_class import Point
  

  (Make sure the filename matches what you saved earlier — if you named it point.py, use from point import Point)

Option 2: Run the File in Interactive Mode via Terminal #

• Open PyCharm's Terminal tab (bottom of the window, next to Python Console).
• Navigate to the folder where you saved your point_class.py file (if you're not already there, use cd path/to/your/file).
• Run this command to launch an interactive Python shell with your class pre-loaded:

  python -i point_class.py
  

Step 3: Execute Your Commands in the Shell #

Once your shell is ready and the Point class is available, run these commands one by one:

>>> p1 = Point(2,3)
>>> p2 = Point(-1,2)
>>> p1 + p2

Important Note: You'll Hit an Error Here! #

Your current code defines __str__ but doesn't implement the __add__ method — Python doesn't know how to add two Point objects by default. To fix this, add this method to your Point class:

def __add__(self, other):
    # Add the x and y coordinates separately
    return Point(self.x + other.x, self.y + other.y)

Now when you run p1 + p2, it'll return a new Point object with coordinates (1,5), and since you have __str__ defined, printing it will show (1,5).

内容的提问来源于stack exchange，提问作者PhyAH