内置函数exec.ipynb

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        "<a href=\"https://colab.research.google.com/github/zzqnot996/Python/blob/main/%E5%86%85%E7%BD%AE%E5%87%BD%E6%95%B0exec.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
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      "source": [
        "exec是Python内置函数之一，用于执行动态生成的Python代码。它的主要作用是将一个字符串作为代码输入，并在运行时执行这段代码。exec函数的基本语法如下\n",
        "\n",
        "\n",
        "\n",
        "```\n",
        "exec(object[, globals[, locals]])\n",
        "```\n",
        "\n",
        "\n",
        "\n",
        "\n",
        "    object: 这是包含要执行代码的字符串或代码对象（通常是字符串）。它可以包含一行或多行Python代码。\n",
        "    globals（可选参数）: 这是一个可选的字典，表示全局命名空间。如果提供了globals参数，代码将在这个全局命名空间中执行。\n",
        "    locals（可选参数）: 这也是一个可选的字典，表示局部命名空间。如果提供了locals参数，代码将在这个局部命名空间中执行。通常，globals和locals参数都不需要提供，以便在当前上下文中执行代码。"
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          "text": [
            "10\n"
          ]
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      "source": [
        "# 示例1：执行简单的赋值操作\n",
        "code = \"x = 10\"\n",
        "exec(code)\n",
        "print(x)  # 输出：10\n",
        ""
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      "cell_type": "code",
      "source": [
        "# 示例2：执行条件语句\n",
        "condition_code = \"if x > 5:\\n    print('x is greater than 5')\"\n",
        "exec(condition_code, globals(), locals())\n"
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        {
          "output_type": "stream",
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          "text": [
            "x is greater than 5\n"
          ]
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      ]
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      "cell_type": "code",
      "source": [
        "# 示例3：在局部和全局命名空间中执行代码\n",
        "global_var = 100\n",
        "local_var = 50\n",
        "code_with_globals_and_locals = \"result = global_var + local_var\"\n",
        "exec(code_with_globals_and_locals, globals(), locals())\n",
        "print(result)  # 输出：150\n"
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          "text": [
            "150\n"
          ]
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