Python3 Pycharm

安装 Python

PyCharm is only an editor; the Python interpreter actually runs the code, so install Python first. Then point PyCharm at that interpreter — no extra setup needed.

Python

import sys

print("has executable:", bool(sys.executable))
print("major version:", sys.version_info.major)
print("can import os:", 'os' in sys.stdlib_module_names)

Output

has executable: True
major version: 3
can import os: True

安装 PyCharm

Download from JetBrains: the free Community edition covers pure Python, while Professional adds web frameworks like Django/Flask. On Windows, tick "Add launchers dir to the PATH".

配置 PyCharm

First launch asks about importing settings, then theme and plugins. Afterwards set Settings → Project → Python Interpreter. Create a separate venv per project so dependencies do not collide.

Settings → Project → Python Interpreter — pick the interpreter
Settings → Editor → Font — set a monospace font with ligatures
Settings → Tools → Terminal — verify the shell works

创建第一个项目

In New Project choose Pure Python, set Location, and pick New environment using Virtualenv. Then right-click the folder → New → Python File to start coding.

Python

def main():
    print("Hello from PyCharm")
    print("sum:", sum(range(5)))

if __name__ == '__main__':
    main()

Output

Hello from PyCharm
sum: 10

运行与调试

Run with Shift+F10 (Ctrl+R on macOS) and debug with Shift+F9. Click the gutter to set a breakpoint; the debugger shows variables, steps through code and reveals the call stack — far better than scattering print calls.

Action	Shortcut
Run	Shift + F10
Debug	Shift + F9
Step over	F8
Step into	F7
Toggle breakpoint	Ctrl + F8
Reformat code	Ctrl + Alt + L

Python

def total(items):
    s = 0
    for i in items:
        s += i
    return s

print(total([1, 2, 3, 4]))

Output

安装 Python

PyCharm 只是编辑器，真正执行代码的是 Python 解释器，所以要先装 Python。装好后在 PyCharm 里指定解释器路径即可，无需额外配置。

Python

import sys

print("has executable:", bool(sys.executable))
print("major version:", sys.version_info.major)
print("can import os:", 'os' in sys.stdlib_module_names)

Output

has executable: True
major version: 3
can import os: True

安装 PyCharm

从 JetBrains 官网下载，社区版（Community）免费且支持纯 Python 开发，专业版额外支持 Django/Flask 等 Web 框架。Windows 安装时建议勾选「Add launchers dir to the PATH」。

配置 PyCharm

首次启动会提示导入旧设置、选择主题和插件。装完在 Settings → Project → Python Interpreter 里指定解释器；建议为每个项目单独建 venv，避免依赖互相污染。

Settings → Project → Python Interpreter —— 指定解释器
Settings → Editor → Font —— 设置等宽字体
Settings → Tools → Terminal —— 确认终端可用

创建第一个项目

New Project 时选 Pure Python，Location 填目录，Interpreter 选 New environment using Virtualenv。项目建好后右键目录 → New → Python File 即可写代码。

Python

def main():
    print("Hello from PyCharm")
    print("sum:", sum(range(5)))

if __name__ == '__main__':
    main()

Output

Hello from PyCharm
sum: 10

运行与调试

运行用 Shift+F10（macOS 是 Ctrl+R），调试用 Shift+F9。在行号旁点一下设断点，调试时能看变量、单步执行、看调用栈 —— 比到处插 print 高效得多。

操作	快捷键
运行	Shift + F10
调试	Shift + F9
单步跳过	F8
单步进入	F7
切换断点	Ctrl + F8
格式化代码	Ctrl + Alt + L

Python

def total(items):
    s = 0
    for i in items:
        s += i
    return s

print(total([1, 2, 3, 4]))

Output

Python3 Pycharm

安装 Python

安装 PyCharm

配置 PyCharm

创建第一个项目

运行与调试

安装 Python

安装 PyCharm

配置 PyCharm

创建第一个项目

运行与调试

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