update session 12

meetings/2021/session_12_functional_programming_with_toolz/Functional_programming_tools_introduction.ipynb

@@ -30,8 +30,7 @@
     "#### Why ?\n",
     "* Code becomes concise and simple to understand\n",
     "* Supports lazy evaluation\n",
-    "* Easier debugging and testing\n",
-    "* Easier parallelism/concurrency"
+    "* Easier debugging and testing"
    ]
   },
   {
@@ -105,7 +104,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 5,
    "id": "214bcf3c",
    "metadata": {},
    "outputs": [],
@@ -126,7 +125,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 6,
    "id": "b57bfc8b",
    "metadata": {},
    "outputs": [
@@ -135,8 +134,8 @@
      "output_type": "stream",
      "text": [
       "adding :  41\n",
-      "adding counter (first call):  41 1\n",
-      "adding counter (second call):  41 2\n",
+      "adding counter (first call):  41 counter value:  1\n",
+      "adding counter (second call):  41 counter value:  2\n",
       "power (p = 1): 1\n",
       "power (p = 2): 32\n"
      ]
@@ -146,8 +145,8 @@
     "# sum --> pure\n",
     "print('adding : ',add(18,23))\n",
     "# sum_counter --> impure\n",
-    "print('adding counter (first call): ',add_counter(18,23),counter)\n",
-    "print('adding counter (second call): ',add_counter(18,23),counter)\n",
+    "print('adding counter (first call): ',add_counter(18,23),'counter value: ',counter)\n",
+    "print('adding counter (second call): ',add_counter(18,23),'counter value: ',counter)\n",
     "# power --> impure\n",
     "print('power (p = 1):',power(5))\n",
     "p = 2\n",
@@ -170,7 +169,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 7,
    "id": "a15d07ad",
    "metadata": {},
    "outputs": [
@@ -210,7 +209,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 8,
    "id": "46349b39",
    "metadata": {},
    "outputs": [],
@@ -239,7 +238,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": 9,
    "id": "da4efbfa",
    "metadata": {},
    "outputs": [
@@ -280,7 +279,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": 10,
    "id": "0aa49f71",
    "metadata": {},
    "outputs": [
@@ -326,7 +325,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 11,
    "id": "085a88c1",
    "metadata": {},
    "outputs": [],
@@ -346,7 +345,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 14,
+   "execution_count": 12,
    "id": "717f703d",
    "metadata": {},
    "outputs": [],
@@ -367,7 +366,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 15,
+   "execution_count": 13,
    "id": "74da56c1",
    "metadata": {},
    "outputs": [
@@ -377,7 +376,7 @@
        "[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]"
       ]
      },
-     "execution_count": 15,
+     "execution_count": 13,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -388,7 +387,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 16,
+   "execution_count": 14,
    "id": "f3f60f05",
    "metadata": {},
    "outputs": [
@@ -398,7 +397,7 @@
        "[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]"
       ]
      },
-     "execution_count": 16,
+     "execution_count": 14,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -409,7 +408,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 17,
+   "execution_count": 15,
    "id": "e82d677a",
    "metadata": {},
    "outputs": [
@@ -419,7 +418,7 @@
        "['This', 'Is', 'Some', 'Text']"
       ]
      },
-     "execution_count": 17,
+     "execution_count": 15,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -438,7 +437,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 18,
+   "execution_count": 16,
    "id": "a9a99457",
    "metadata": {},
    "outputs": [
@@ -448,7 +447,7 @@
        "[2, 4, 6, 8, 10]"
       ]
      },
-     "execution_count": 18,
+     "execution_count": 16,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -459,7 +458,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 19,
+   "execution_count": 17,
    "id": "8c8bf214",
    "metadata": {},
    "outputs": [
@@ -469,7 +468,7 @@
        "[2, 4, 6, 8, 10]"
       ]
      },
-     "execution_count": 19,
+     "execution_count": 17,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -480,7 +479,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 20,
+   "execution_count": 18,
    "id": "6d35fb18",
    "metadata": {},
    "outputs": [
@@ -490,7 +489,7 @@
        "['this', 'Some', 'TEXT']"
       ]
      },
-     "execution_count": 20,
+     "execution_count": 18,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -518,7 +517,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 19,
    "id": "ebb6f7ef",
    "metadata": {},
    "outputs": [
@@ -528,7 +527,7 @@
        "<function __main__.<lambda>(x)>"
       ]
      },
-     "execution_count": 21,
+     "execution_count": 19,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -539,7 +538,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 22,
+   "execution_count": 20,
    "id": "5203c823",
    "metadata": {},
    "outputs": [
@@ -549,7 +548,7 @@
        "4"
       ]
      },
-     "execution_count": 22,
+     "execution_count": 20,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -568,7 +567,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 23,
+   "execution_count": 21,
    "id": "0cc74352",
    "metadata": {},
    "outputs": [
@@ -578,7 +577,7 @@
        "[1, 4, 9, 16, 25, 36, 49, 64, 81, 100]"
       ]
      },
-     "execution_count": 23,
+     "execution_count": 21,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -589,7 +588,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 24,
+   "execution_count": 22,
    "id": "2360f9ad",
    "metadata": {},
    "outputs": [
@@ -599,7 +598,7 @@
        "['this', 'Some', 'TEXT']"
       ]
      },
-     "execution_count": 24,
+     "execution_count": 22,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -625,7 +624,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 25,
+   "execution_count": 23,
    "id": "fd96efc0",
    "metadata": {},
    "outputs": [],
@@ -635,7 +634,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 26,
+   "execution_count": 24,
    "id": "f3e79aed",
    "metadata": {},
    "outputs": [
@@ -645,7 +644,7 @@
        "113"
       ]
      },
-     "execution_count": 26,
+     "execution_count": 24,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -697,7 +696,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 27,
+   "execution_count": 25,
    "id": "e252174a",
    "metadata": {},
    "outputs": [],
@@ -720,7 +719,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 28,
+   "execution_count": 26,
    "id": "80222b27",
    "metadata": {
     "scrolled": false
@@ -753,7 +752,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 29,
+   "execution_count": 27,
    "id": "f352e1c3",
    "metadata": {},
    "outputs": [
@@ -784,7 +783,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 30,
+   "execution_count": 28,
    "id": "ef9c95fc",
    "metadata": {},
    "outputs": [
@@ -817,7 +816,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 31,
+   "execution_count": 29,
    "id": "0aa9e0f7",
    "metadata": {},
    "outputs": [],
@@ -827,7 +826,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 32,
+   "execution_count": 30,
    "id": "ef5df16a",
    "metadata": {},
    "outputs": [
@@ -837,7 +836,7 @@
        "[1, 3, 5, 7, 9]"
       ]
      },
-     "execution_count": 32,
+     "execution_count": 30,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -859,7 +858,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 33,
+   "execution_count": 31,
    "id": "f814f0b5",
    "metadata": {},
    "outputs": [],
@@ -869,7 +868,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 34,
+   "execution_count": 32,
    "id": "005781ab",
    "metadata": {},
    "outputs": [
@@ -879,7 +878,7 @@
        "[2, 4, 6, 8, 10]"
       ]
      },
-     "execution_count": 34,
+     "execution_count": 32,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -890,64 +889,64 @@
   },
   {
    "cell_type": "markdown",
-   "id": "a4077325",
+   "id": "42f768c7",
    "metadata": {},
    "source": [
-    "**toolz groupby**"
+    "**itertools groupby**"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 35,
-   "id": "4baefdd1",
+   "execution_count": 33,
+   "id": "1d272af7",
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "{False: [1, 3, 5, 7, 9], True: [2, 4, 6, 8, 10]}\n"
+      "False [1]\n",
+      "True [2]\n",
+      "False [3]\n",
+      "True [4]\n",
+      "False [5]\n",
+      "True [6]\n",
+      "False [7]\n",
+      "True [8]\n",
+      "False [9]\n",
+      "True [10]\n"
      ]
     }
    ],
    "source": [
-    "print(groupby(iseven,data))"
+    "for key,group in itertools.groupby(data,iseven):\n",
+    "    print(key,list(group))"
    ]
   },
   {
    "cell_type": "markdown",
-   "id": "42f768c7",
+   "id": "a4077325",
    "metadata": {},
    "source": [
-    "**itertools groupby**"
+    "**toolz groupby**"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 36,
-   "id": "1d272af7",
+   "execution_count": 34,
+   "id": "4baefdd1",
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "False [1]\n",
-      "True [2]\n",
-      "False [3]\n",
-      "True [4]\n",
-      "False [5]\n",
-      "True [6]\n",
-      "False [7]\n",
-      "True [8]\n",
-      "False [9]\n",
-      "True [10]\n"
+      "{False: [1, 3, 5, 7, 9], True: [2, 4, 6, 8, 10]}\n"
      ]
     }
    ],
    "source": [
-    "for key,group in itertools.groupby(data,iseven):\n",
-    "    print(key,list(group))"
+    "print(groupby(iseven,data))"
    ]
   },
   {
@@ -960,7 +959,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 37,
+   "execution_count": 35,
    "id": "12ce1dac",
    "metadata": {},
    "outputs": [
@@ -970,7 +969,7 @@
        "{True: ['this', 'Some', 'TEXT'], False: ['is']}"
       ]
      },
-     "execution_count": 37,
+     "execution_count": 35,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -982,7 +981,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 38,
+   "execution_count": 36,
    "id": "2f7812c3",
    "metadata": {},
    "outputs": [],
@@ -993,7 +992,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 39,
+   "execution_count": 37,
    "id": "f292e668",
    "metadata": {},
    "outputs": [
@@ -1003,7 +1002,7 @@
        "{4: ['this', 'Some', 'TEXT'], 2: ['is']}"
       ]
      },
-     "execution_count": 39,
+     "execution_count": 37,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1024,7 +1023,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 40,
+   "execution_count": 38,
    "id": "598fb73e",
    "metadata": {},
    "outputs": [],
@@ -1034,7 +1033,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 41,
+   "execution_count": 39,
    "id": "51e1dbe6",
    "metadata": {},
    "outputs": [
@@ -1044,7 +1043,7 @@
        "{False: 5, True: 5}"
       ]
      },
-     "execution_count": 41,
+     "execution_count": 39,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1055,7 +1054,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 42,
+   "execution_count": 40,
    "id": "dc95d58a",
    "metadata": {},
    "outputs": [
@@ -1065,7 +1064,7 @@
        "{4: 3, 2: 1}"
       ]
      },
-     "execution_count": 42,
+     "execution_count": 40,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1093,7 +1092,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 43,
+   "execution_count": 41,
    "id": "45f4b438",
    "metadata": {},
    "outputs": [],
@@ -1111,7 +1110,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 44,
+   "execution_count": 42,
    "id": "a5c11408",
    "metadata": {},
    "outputs": [
@@ -1121,7 +1120,7 @@
        "935"
       ]
      },
-     "execution_count": 44,
+     "execution_count": 42,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1132,7 +1131,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 45,
+   "execution_count": 43,
    "id": "dcf87ac8",
    "metadata": {},
    "outputs": [
@@ -1142,7 +1141,7 @@
        "935"
       ]
      },
-     "execution_count": 45,
+     "execution_count": 43,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1167,7 +1166,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 46,
+   "execution_count": 44,
    "id": "bbba4124",
    "metadata": {},
    "outputs": [],
@@ -1177,7 +1176,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 47,
+   "execution_count": 45,
    "id": "e0cafff7",
    "metadata": {},
    "outputs": [
@@ -1187,7 +1186,7 @@
        "935"
       ]
      },
-     "execution_count": 47,
+     "execution_count": 45,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -1215,13 +1214,12 @@