Better explain pure-Julia function

examples/pysr_demo.ipynb

@@ -846,7 +846,7 @@
       "source": [
         "jl.eval(\"\"\"\n",
         "function p(i::T) where T\n",
-        "    if (0.5 < i < 1000)\n",
+        "    if 0.5 < i < 1000\n",
         "        return T(Primes.prime(round(Int, i)))\n",
         "    else\n",
         "        return T(NaN)\n",
@@ -861,12 +861,26 @@
       "metadata": {},
       "source": [
         "\n",
-        "We have created a a function `p`, which takes an arbitrary number as input.\n",
+        "We have created a function `p`, which takes a number `i` of type `T` (e.g., `T=Float64`).\n",
         "`p` first checks whether the input is between 0.5 and 1000.\n",
         "If out-of-bounds, it returns `NaN`.\n",
-        "If in-bounds, it rounds it to the nearest integer, compures the corresponding prime number, and then\n",
+        "If in-bounds, it rounds it to the nearest integer, computes the corresponding prime number, and then\n",
         "converts it to the same type as input.\n",
         "\n",
+        "The equivalent function in Python would be:\n",
+        "\n",
+        "```python\n",
+        "import sympy\n",
+        "\n",
+        "def p(i):\n",
+        "    if 0.5 < i < 1000:\n",
+        "        return float(sympy.prime(int(round(i))))\n",
+        "    else:\n",
+        "        return float(\"nan\")\n",
+        "```\n",
+        "\n",
+        "(However, note that this version assumes 64-bit float input, rather than any input type `T`)\n",
+        "\n",
         "Next, let's generate a list of primes for our test dataset.\n",
         "Since we are using PyJulia, we can just call `p` directly to do this:\n"
       ]
@@ -1357,14 +1371,14 @@
       "name": "pysr_demo.ipynb",
       "provenance": []
     },
-    "language_info": {
-      "name": "python"
-    },
+    "gpuClass": "standard",
     "kernelspec": {
-      "name": "python3",
-      "display_name": "Python 3"
+      "display_name": "Python 3",
+      "name": "python3"
     },
-    "gpuClass": "standard"
+    "language_info": {
+      "name": "python"
+    }
   },
   "nbformat": 4,
   "nbformat_minor": 0