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backend/fix_venv.sh

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+#!/bin/bash
+
+# 虚拟环境修复脚本
+
+echo "=== 虚拟环境修复工具 ==="
+
+# 检查当前目录
+if [ ! -f "main.py" ]; then
+    echo "错误: 请在包含main.py的项目根目录下运行此脚本"
+    exit 1
+fi
+
+echo "当前目录: $(pwd)"
+echo "当前Python版本: $(python3 --version)"
+
+# 备份现有虚拟环境（如果存在）
+if [ -d "venv" ]; then
+    echo "发现现有虚拟环境，正在备份..."
+    mv venv venv_backup_$(date +%Y%m%d_%H%M%S)
+    echo "✓ 现有虚拟环境已备份"
+fi
+
+# 创建新的虚拟环境
+echo "正在创建新的虚拟环境..."
+python3 -m venv venv
+
+if [ $? -eq 0 ]; then
+    echo "✓ 虚拟环境创建成功"
+else
+    echo "✗ 虚拟环境创建失败"
+    echo "可能的原因:"
+    echo "1. python3-venv 未安装"
+    echo "2. 权限不足"
+    echo "3. 磁盘空间不足"
+    echo ""
+    echo "尝试安装 python3-venv:"
+    echo "sudo apt-get install python3-venv  # Ubuntu/Debian"
+    echo "sudo yum install python3-virtualenv  # CentOS/RHEL"
+    exit 1
+fi
+
+# 验证虚拟环境文件
+echo "验证虚拟环境文件..."
+if [ -f "venv/bin/activate" ]; then
+    echo "✓ 激活脚本存在: venv/bin/activate"
+
+    # 显示虚拟环境信息
+    echo "虚拟环境内容:"
+    ls -la venv/bin/ | head -5
+
+    # 测试激活
+    echo "测试虚拟环境激活..."
+    source venv/bin/activate
+    echo "✓ 虚拟环境激活成功"
+    echo "Python路径: $(which python)"
+    echo "Python版本: $(python --version)"
+
+    # 升级pip
+    echo "升级pip..."
+    pip install --upgrade pip
+    echo "✓ pip升级完成"
+
+else
+    echo "✗ 激活脚本不存在"
+    echo "显示venv目录内容:"
+    ls -la venv/ 2>/dev/null || echo "venv目录为空或不存在"
+    exit 1
+fi
+
+echo ""
+echo "=== 修复完成 ==="
+echo "虚拟环境已成功创建并可以正常使用"
+echo ""
+echo "下一步操作:"
+echo "1. 重新运行部署脚本: ./deploy_linux.sh"
+echo "2. 或者手动激活并安装依赖:"
+echo "   source venv/bin/activate"
+echo "   pip install -r requirements.txt"