Metadata-Version: 2.4
Name: easy-captcha-python
Version: 0.1.0
Summary: Python图形验证码生成库，支持GIF、中文、算术等类型
Author-email: Kevin Roo <mostvegetableplayer@gmail.com>
License: Apache-2.0
Project-URL: Homepage, https://gitee.com/diamondore/EasyCaptcha-Python
Project-URL: Repository, https://gitee.com/diamondore/EasyCaptcha-Python
Keywords: captcha,verification code,gif,image,验证码
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=3.7
Description-Content-Type: text/markdown
License-File: LICENSE
Requires-Dist: Pillow>=9.0.0
Provides-Extra: dev
Requires-Dist: pytest>=7.0; extra == "dev"
Requires-Dist: pytest-cov; extra == "dev"
Requires-Dist: black; extra == "dev"
Requires-Dist: flake8; extra == "dev"
Dynamic: license-file
Dynamic: requires-python

# EasyCaptcha-Python

![Python](https://img.shields.io/badge/python-3.7+-blue.svg)
![License](https://img.shields.io/badge/license-Apache%202.0-green.svg)

Python 图形验证码生成库，支持 GIF、中文、算术等类型，可用于 Python Web、桌面应用等项目。

这是 [EasyCaptcha](https://github.com/whvcse/EasyCaptcha) Java 版本的 Python 实现。

---

## 1.简介

&emsp;Python 图形验证码，支持 gif、中文、算术等类型，可用于 Flask、Django、FastAPI 等 Web 框架。

---

## 2.效果展示

**PNG 类型：**

![验证码](https://s2.ax1x.com/2019/08/23/msFrE8.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msF0DP.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msFwut.png)

**GIF 类型：**

![验证码](https://s2.ax1x.com/2019/08/23/msFzVK.gif)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msFvb6.gif)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msFXK1.gif)

**算术类型：**

![验证码](https://s2.ax1x.com/2019/08/23/mskKPg.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msknIS.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/mskma8.png)

**中文类型：**

![验证码](https://s2.ax1x.com/2019/08/23/mskcdK.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msk6Z6.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msksqx.png)

**内置字体：**

![验证码](https://s2.ax1x.com/2019/08/23/msAVSJ.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msAAW4.png)
&emsp;&emsp;
![验证码](https://s2.ax1x.com/2019/08/23/msAkYF.png)

---

## 3.安装

### 3.1.使用 pip 安装

```bash
pip install easy-captcha-python
```

### 3.2.从源码安装

```bash
git clone https://github.com/yourusername/easy-captcha-python.git
cd easy-captcha-python
pip install -e .
```

---

## 4.使用方法

### 4.1.快速开始

```python
from easy_captcha import SpecCaptcha
from io import BytesIO

# 三个参数分别为宽、高、位数
captcha = SpecCaptcha(130, 48, 5)

# 获取验证码文本
code = captcha.text()
print(f"验证码: {code}")

# 输出到文件
with open('captcha.png', 'wb') as f:
    stream = BytesIO()
    captcha.out(stream)
    f.write(stream.getvalue())
```

### 4.2.在 Flask 中使用

```python
from flask import Flask, session, make_response
from easy_captcha import SpecCaptcha
from io import BytesIO

app = Flask(__name__)
app.secret_key = 'your-secret-key'

@app.route('/captcha')
def captcha():
    # 创建验证码
    cap = SpecCaptcha(130, 48, 5)
    # 验证码文本存入session
    session['captcha'] = cap.text().lower()

    # 输出图片
    stream = BytesIO()
    cap.out(stream)

    response = make_response(stream.getvalue())
    response.headers['Content-Type'] = 'image/png'
    return response

@app.route('/verify/<code>')
def verify(code):
    # 获取session中的验证码
    if code.lower() == session.get('captcha'):
        return '验证成功'
    return '验证失败'
```

前端 HTML 代码：

```html
<img src="/captcha" width="130px" height="48px" />
```

### 4.3.在 Django 中使用

```python
from django.http import HttpResponse
from easy_captcha import SpecCaptcha
from io import BytesIO

def captcha(request):
    cap = SpecCaptcha(130, 48, 5)
    # 验证码文本存入session
    request.session['captcha'] = cap.text().lower()

    # 输出图片
    stream = BytesIO()
    cap.out(stream)

    return HttpResponse(stream.getvalue(), content_type='image/png')
```

### 4.4.在 FastAPI 中使用

```python
from fastapi import FastAPI, Response
from easy_captcha import SpecCaptcha
from io import BytesIO

app = FastAPI()

@app.get("/captcha")
async def captcha():
    cap = SpecCaptcha(130, 48, 5)
    code = cap.text()

    stream = BytesIO()
    cap.out(stream)

    return Response(content=stream.getvalue(), media_type="image/png")
```

### 4.5.前后端分离项目

&emsp;前后端分离项目建议使用 base64 编码返回：

```python
from flask import Flask, jsonify, request
import uuid

app = Flask(__name__)
# 这里使用字典模拟，生产环境建议使用Redis
captcha_store = {}

@app.route('/captcha')
def get_captcha():
    from easy_captcha import SpecCaptcha

    cap = SpecCaptcha(130, 48, 5)
    code = cap.text().lower()
    key = str(uuid.uuid4())

    # 存储验证码（生产环境建议存到Redis并设置过期时间）
    captcha_store[key] = code

    # 返回key和base64图片
    return jsonify({
        'key': key,
        'image': cap.to_base64()
    })

@app.route('/login', methods=['POST'])
def login():
    data = request.json
    ver_key = data.get('verKey')
    ver_code = data.get('verCode', '').lower()

    # 验证验证码
    if ver_code == captcha_store.get(ver_key):
        # 验证成功后删除
        captcha_store.pop(ver_key, None)
        return jsonify({'success': True})
    return jsonify({'success': False, 'message': '验证码错误'})
```

前端使用示例：

```html
<img id="verImg" width="130px" height="48px" />

<script>
    var verKey;
    // 获取验证码
    fetch("/captcha")
        .then((res) => res.json())
        .then((data) => {
            verKey = data.key;
            document.getElementById("verImg").src = data.image;
        });

    // 登录
    fetch("/login", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({
            verKey: verKey,
            verCode: "8u6h",
            username: "admin",
            password: "admin",
        }),
    })
        .then((res) => res.json())
        .then((data) => console.log(data));
</script>
```

---

## 5.更多设置

### 5.1.验证码类型

```python
from easy_captcha import (
    SpecCaptcha, GifCaptcha, ChineseCaptcha,
    ChineseGifCaptcha, ArithmeticCaptcha
)

# PNG类型
captcha = SpecCaptcha(130, 48, 5)
code = captcha.text()  # 获取验证码文本
chars = captcha.text_char()  # 获取验证码字符数组

# GIF类型
captcha = GifCaptcha(130, 48, 5)

# 中文类型
captcha = ChineseCaptcha(130, 48, 4)

# 中文GIF类型
captcha = ChineseGifCaptcha(130, 48, 4)

# 算术类型
captcha = ArithmeticCaptcha(130, 48, 2)
captcha.len = 3  # 几位数运算，默认是两位
formula = captcha.get_arithmetic_string()  # 获取运算公式：3+2=?
result = captcha.text()  # 获取运算结果：5

# 输出验证码
from io import BytesIO
stream = BytesIO()
captcha.out(stream)
```

> 注意：<br/> > &emsp;算术验证码的 len 表示是几位数运算，而其他验证码的 len 表示验证码的位数，算术验证码的 text()表示的是公式的结果，
> 对于算术验证码，你应该把公式的结果存储到 session，而不是公式。

### 5.2.验证码字符类型

| 类型               | 描述           |
| :----------------- | :------------- |
| TYPE_DEFAULT       | 数字和字母混合 |
| TYPE_ONLY_NUMBER   | 纯数字         |
| TYPE_ONLY_CHAR     | 纯字母         |
| TYPE_ONLY_UPPER    | 纯大写字母     |
| TYPE_ONLY_LOWER    | 纯小写字母     |
| TYPE_NUM_AND_UPPER | 数字和大写字母 |

使用方法：

```python
from easy_captcha import SpecCaptcha, TYPE_ONLY_NUMBER

captcha = SpecCaptcha(130, 48, 5)
captcha.char_type = TYPE_ONLY_NUMBER
```

> 只有`SpecCaptcha`和`GifCaptcha`设置才有效果。

### 5.3.字体设置

内置字体：

| 字体    | 效果                                           |
| :------ | :--------------------------------------------- |
| FONT_1  | ![](https://s2.ax1x.com/2019/08/23/msMe6U.png) |
| FONT_2  | ![](https://s2.ax1x.com/2019/08/23/msMAf0.png) |
| FONT_3  | ![](https://s2.ax1x.com/2019/08/23/msMCwj.png) |
| FONT_4  | ![](https://s2.ax1x.com/2019/08/23/msM9mQ.png) |
| FONT_5  | ![](https://s2.ax1x.com/2019/08/23/msKz6S.png) |
| FONT_6  | ![](https://s2.ax1x.com/2019/08/23/msKxl8.png) |
| FONT_7  | ![](https://s2.ax1x.com/2019/08/23/msMPTs.png) |
| FONT_8  | ![](https://s2.ax1x.com/2019/08/23/msMmXF.png) |
| FONT_9  | ![](https://s2.ax1x.com/2019/08/23/msMVpV.png) |
| FONT_10 | ![](https://s2.ax1x.com/2019/08/23/msMZlT.png) |

使用方法：

```python
from easy_captcha import SpecCaptcha, FONT_1, FONT_2

captcha = SpecCaptcha(130, 48, 5)

# 设置内置字体
captcha.set_font(FONT_1, size=32)

# 也可以使用系统字体（需要PIL.ImageFont支持）
from PIL import ImageFont
captcha._font = ImageFont.truetype("arial.ttf", 32)
```

### 5.4.输出 base64 编码

```python
from easy_captcha import SpecCaptcha

captcha = SpecCaptcha(130, 48, 5)
base64_str = captcha.to_base64()

# 如果不想要base64的头部data:image/png;base64,
base64_str = captcha.to_base64("")  # 加一个空的参数即可
```

### 5.5.输出到文件

```python
from easy_captcha import SpecCaptcha
from io import BytesIO

captcha = SpecCaptcha(130, 48, 5)

# 输出到文件
with open('captcha.png', 'wb') as f:
    stream = BytesIO()
    captcha.out(stream)
    f.write(stream.getvalue())
```

---

## 6.完整示例

查看 `examples/` 目录获取更多示例：

-   `basic_usage.py` - 基本使用示例
-   `all_types_demo.py` - 所有验证码类型演示

运行示例：

```bash
# 运行基本示例
python examples/basic_usage.py

# 运行完整演示
python examples/all_types_demo.py
```

所有生成的验证码图片将保存到 `./out/` 目录。

---

## 7.许可证

Apache License 2.0

---

## 8.致谢

本项目是 [EasyCaptcha](https://github.com/whvcse/EasyCaptcha) 的 Python 实现版本。

---

## 9.贡献

欢迎提交 Issue 和 Pull Request！
