Updating course content

content/02_memory_management_in_python.ipynb

@@ -644,6 +644,145 @@
     "asizeof.asizeof([1, 2, [1, 2, 3, 4]])"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "47d3f8ec-d600-4690-9586-96282fa7538e",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%pip install scalene"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "4757a6c4-9a01-47a4-acb9-874a6cbf0d76",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%%writefile example/concate_with_plus.py\n",
+    "def add_string_with_plus(iters):\n",
+    "    s = \"\"\n",
+    "    for i in range(iters):\n",
+    "        s += \"abc\"\n",
+    "    assert len(s) == 3*iters\n",
+    "    \n",
+    "add_string_with_plus(500000)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "61ac2488-6c3f-44ea-a0b9-a0e3319218c1",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%%writefile example/concate_with_join.py\n",
+    "def add_string_with_join(iters):\n",
+    "    l = []\n",
+    "    for i in range(iters):\n",
+    "        l.append(\"abc\")\n",
+    "    s = \"\".join(l)\n",
+    "    assert len(s) == 3*iters\n",
+    "    \n",
+    "add_string_with_join(500000)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "d7a1af7e-66f9-4336-beda-f4b011b7aee1",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "!scalene example/concate_with_plus.py"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "b2458770-7cf8-403c-876c-20839788d1f7",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "!scalene example/concate_with_join.py"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "id": "883f363c-c110-41fa-b64f-f9f2419b6967",
+   "metadata": {},
+   "source": [
+    "You will get better output once you run it from terminal:\n",
+    "![](./static/scalene_example.png)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "4ba7fa86-fe7f-4db9-9a5d-66457daa8887",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "%pip install memory-profiler "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "b35e7e4d-760d-4339-895c-209cff1fc317",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Overwriting example/memory_profile.py\n"
+     ]
+    }
+   ],
+   "source": [
+    "%%writefile example/memory_profile.py\n",
+    "@profile\n",
+    "def my_func():\n",
+    "    a = [1] * (10 ** 6)\n",
+    "    b = [2] * (2 * 10 ** 7)\n",
+    "    del b\n",
+    "    return a\n",
+    "\n",
+    "my_func()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "id": "0e3bc5c2-eb97-47f4-9fa2-060f46d64719",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Filename: example/memory_profile.py\n",
+      "\n",
+      "Line #    Mem usage    Increment  Occurrences   Line Contents\n",
+      "=============================================================\n",
+      "     1   37.766 MiB   37.766 MiB           1   @profile\n",
+      "     2                                         def my_func():\n",
+      "     3   45.410 MiB    7.645 MiB           1       a = [1] * (10 ** 6)\n",
+      "     4  198.000 MiB  152.590 MiB           1       b = [2] * (2 * 10 ** 7)\n",
+      "     5   45.414 MiB -152.586 MiB           1       del b\n",
+      "     6   45.414 MiB    0.000 MiB           1       return a\n",
+      "\n",
+      "\n"
+     ]
+    }
+   ],
+   "source": [
+    "!python -m memory_profiler example/memory_profile.py"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "d760cc67-2734-4454-a14a-06f4e46ec29f",
@@ -1700,7 +1839,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.4"
+   "version": "3.10.12"
   }
  },
  "nbformat": 4,

content/example/concate_with_join.py

@@ -0,0 +1,9 @@
+@profile
+def add_string_with_join(iters):
+    l = []
+    for i in range(iters):
+        l.append("abc")
+    s = "".join(l)
+    assert len(s) == 3*iters
+
+add_string_with_join(50000)

content/example/concate_with_plus.py

@@ -0,0 +1,8 @@
+@profile
+def add_string_with_plus(iters):
+    s = ""
+    for i in range(iters):
+        s += "abc"
+    assert len(s) == 3*iters
+
+add_string_with_plus(50000)

content/example/memory_profile.py

@@ -0,0 +1,8 @@
+@profile
+def my_func():
+    a = [1] * (10 ** 6)
+    b = [2] * (2 * 10 ** 7)
+    del b
+    return a
+
+my_func()