From d04906744bdfc8c417c4d1ab2017d67a12b0d3b6 Mon Sep 17 00:00:00 2001
From: Anna Meyer <annapmeyer95@gmail.com>
Date: Mon, 3 Jul 2023 11:57:28 -0500
Subject: [PATCH] lec 7 notes
---
.../lec_06_Iteration_Practice_notes.ipynb | 692 ++++++++++++++++++
.../lec_06_Iteration_notes.ipynb | 125 +++-
2 files changed, 797 insertions(+), 20 deletions(-)
create mode 100644 sum23/lecture_materials/06_Iteration1/lec_06_Iteration_Practice_notes.ipynb
diff --git a/sum23/lecture_materials/06_Iteration1/lec_06_Iteration_Practice_notes.ipynb b/sum23/lecture_materials/06_Iteration1/lec_06_Iteration_Practice_notes.ipynb
new file mode 100644
index 0000000..30b7d4b
--- /dev/null
+++ b/sum23/lecture_materials/06_Iteration1/lec_06_Iteration_Practice_notes.ipynb
@@ -0,0 +1,692 @@
+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "id": "6a76ef95",
+ "metadata": {},
+ "source": [
+ "# Iteration Practice"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "103da70b",
+ "metadata": {},
+ "source": [
+ "## Learning Objectives\n",
+ "\n",
+ "- Iterate through a dataset using for idx in range(project.count())\n",
+ "- Compute the frequency of data that meets a certain criteria\n",
+ "- Find the maximum or minimum value of a numeric column in a dataset\n",
+ " - Handle missing numeric values when computing a maximum / minimum\n",
+ " - Use the index of a maximum or minimum to access other information about that data item\n",
+ "- Use break and continue in for loops when processing a dataset\n",
+ "- Trace the output of a nested loop algorithm that prints out a game grid"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "id": "28961628",
+ "metadata": {},
+ "outputs": [],
+ "source": [
+ "import project"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "id": "c9341253",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "['__builtins__',\n",
+ " '__cached__',\n",
+ " '__doc__',\n",
+ " '__file__',\n",
+ " '__init__',\n",
+ " '__loader__',\n",
+ " '__name__',\n",
+ " '__package__',\n",
+ " '__spec__',\n",
+ " '__student__',\n",
+ " 'count',\n",
+ " 'get_age',\n",
+ " 'get_latitude',\n",
+ " 'get_lecture',\n",
+ " 'get_longitude',\n",
+ " 'get_major',\n",
+ " 'get_pet_owner',\n",
+ " 'get_piazza_topping',\n",
+ " 'get_procrastinator',\n",
+ " 'get_runner',\n",
+ " 'get_sleep_habit',\n",
+ " 'get_zip_code']"
+ ]
+ },
+ "execution_count": 2,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "# TODO: inspect the functions inside project module\n",
+ "dir(project)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "id": "d1dca7ae",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Help on module project:\n",
+ "\n",
+ "NAME\n",
+ " project\n",
+ "\n",
+ "FUNCTIONS\n",
+ " __init__()\n",
+ " \n",
+ " count()\n",
+ " This function will return the number of records in the dataset\n",
+ " \n",
+ " get_age(idx)\n",
+ " get_age(idx) returns the age of the student in row idx\n",
+ " \n",
+ " get_latitude(idx)\n",
+ " get_latitude(idx) returns the latitude of the student's favourite place in row idx\n",
+ " \n",
+ " get_lecture(idx)\n",
+ " get_lecture(idx) returns the lecture of the student in row idx\n",
+ " \n",
+ " get_longitude(idx)\n",
+ " get_longitude(idx) returns the longitude of the student's favourite place in row idx\n",
+ " \n",
+ " get_major(idx)\n",
+ " get_major(idx) returns the major of the student in row idx\n",
+ " \n",
+ " get_pet_owner(idx)\n",
+ " get_pet_owner(idx) returns the pet preference of student in row idx\n",
+ " \n",
+ " get_piazza_topping(idx)\n",
+ " get_piazza_topping(idx) returns the preferred pizza toppings of the student in row idx\n",
+ " \n",
+ " get_procrastinator(idx)\n",
+ " get_procrastinator(idx) returns whether student in row idx is a procrastinator\n",
+ " \n",
+ " get_runner(idx)\n",
+ " get_runner(idx) returns whether student in row idx is a runner\n",
+ " \n",
+ " get_sleep_habit(idx)\n",
+ " get_sleep_habit(idx) returns the sleep habit of the student in row idx\n",
+ " \n",
+ " get_zip_code(idx)\n",
+ " get_zip_code(idx) returns the residential zip code of the student in row idx\n",
+ "\n",
+ "DATA\n",
+ " __student__ = [{'Age': '22', 'Latitude': '43.073051', 'Lecture': 'LEC0...\n",
+ "\n",
+ "FILE\n",
+ " /Users/annameyer/DocumentsLocal/teaching/cs220-lecture-material/sum23/lecture_materials/06_Iteration1/project.py\n",
+ "\n",
+ "\n"
+ ]
+ }
+ ],
+ "source": [
+ "# TODO: inspect the project module's documentation\n",
+ "help(project)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "7fb78f6b",
+ "metadata": {},
+ "source": [
+ "### How many students does the dataset have?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "id": "d67a080f",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "992"
+ ]
+ },
+ "execution_count": 4,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "project.count()"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "3c97d494",
+ "metadata": {},
+ "source": [
+ "### What is the age of the student at index 10?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 5,
+ "id": "bde8dc35",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'21'"
+ ]
+ },
+ "execution_count": 5,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "id_10_age = project.get_age(10)\n",
+ "id_10_age"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 6,
+ "id": "b0f87a2c",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "<class 'str'>\n"
+ ]
+ }
+ ],
+ "source": [
+ "# TODO: inspect return value type of get_age function\n",
+ "print(type(id_10_age))"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "37898141",
+ "metadata": {},
+ "source": [
+ "### What is the lecture number of the student at index 20?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 7,
+ "id": "ba993090",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'LEC001'"
+ ]
+ },
+ "execution_count": 7,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "project.get_lecture(20)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "60730da8",
+ "metadata": {},
+ "source": [
+ "### What is the sleep habit of the student at the last index?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 9,
+ "id": "1d92e499",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "'night owl'"
+ ]
+ },
+ "execution_count": 9,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "project.get_sleep_habit(project.count() - 1)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "af3d9d8c",
+ "metadata": {},
+ "source": [
+ "### How many current lecture (example: LEC001) students are in the dataset? \n",
+ "\n",
+ "- use `for` loop to iterate over the dataset:\n",
+ " - `count` function gives you total number of students\n",
+ " - use `range` built-in function to generate sequence of integers from `0` to `count - 1`\n",
+ "- use `get_lecture` to retrieve lecture column value\n",
+ "- use `if` condition, to determine whether current student is part of `LEC001`\n",
+ " - `True` evaluation: increment count\n",
+ " - `False` evaluation: nothing to do"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 11,
+ "id": "e024c488",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "195\n"
+ ]
+ }
+ ],
+ "source": [
+ "count = 0\n",
+ "for idx in range(project.count()):\n",
+ " lecture_num = project.get_lecture(idx)\n",
+ " if lecture_num == 'LEC001':\n",
+ " count += 1\n",
+ "print(count)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "c6a2ddf7",
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ },
+ {
+ "cell_type": "markdown",
+ "id": "b9ff6434",
+ "metadata": {},
+ "source": [
+ "### What is the age of the oldest student in current lecture (example: LEC001)?\n",
+ "\n",
+ "- use `for` loop to iterate over the dataset just like last problem\n",
+ "- use `get_age` to retrieve lecture column value\n",
+ " - if: age is '' (empty), move on to next student using `continue`\n",
+ " - make sure to typecast return value to an integer\n",
+ "- use `get_lecture` to retrieve lecture column value\n",
+ "- use `if` condition, to determine whether current student is part of `LEC001`\n",
+ " - use `if` condition to determine whether current student's age is greater than previously known max age\n",
+ " - `True` evaluation: replace previously known max age with current age\n",
+ " - `False` evaluation: nothing to do"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 16,
+ "id": "38bd778a",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "37\n"
+ ]
+ }
+ ],
+ "source": [
+ "max_age = 0\n",
+ "for idx in range(project.count()):\n",
+ " age = project.get_age(idx)\n",
+ " \n",
+ " if age == '':\n",
+ " continue\n",
+ " \n",
+ " age = int(age)\n",
+ "\n",
+ " lecture_num = project.get_lecture(idx)\n",
+ " if lecture_num == 'LEC001':\n",
+ " if age > max_age:\n",
+ " max_age = age\n",
+ "\n",
+ "print(max_age)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "b40a32fb",
+ "metadata": {},
+ "source": [
+ "### What is the age of the youngest student in current lecture (example: LEC001)?\n",
+ "- use similar algorithm as above question"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "ea77e0cd",
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ },
+ {
+ "cell_type": "markdown",
+ "id": "296c2a49",
+ "metadata": {},
+ "source": [
+ "### What is the average age of students enrolled in CS220 / CS319?\n",
+ "- you will get an interesting answer :)\n",
+ "- how can we ensure that data doesn't skew statistics?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 14,
+ "id": "8b7c8367",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Average age is: 64.8225806451613\n"
+ ]
+ }
+ ],
+ "source": [
+ "total = 0\n",
+ "number_of_students = 0\n",
+ "\n",
+ "for idx in range(project.count()):\n",
+ " age = project.get_age(idx)\n",
+ " \n",
+ " if age == '':\n",
+ " continue\n",
+ " age = int(age)\n",
+ " \n",
+ " #TODO: make sure age is real\n",
+ " \n",
+ " total += age\n",
+ " number_of_students += 1\n",
+ "print(\"Average age is:\", total / number_of_students)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "48f1c791",
+ "metadata": {},
+ "source": [
+ "### What major is the youngest student in current lecture (example: LEC001) planning to declare?\n",
+ "- now, we need to find some other detail about the youngest student\n",
+ "- often, you'll have to keep track of ID of the max or min, so that you can retrive other details about that data entry"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 18,
+ "id": "a524873b",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Economics\n"
+ ]
+ }
+ ],
+ "source": [
+ "min_age = 99\n",
+ "min_age_idx = -1 \n",
+ "\n",
+ "for idx in range(project.count()):\n",
+ " age = project.get_age(idx)\n",
+ " if age == '':\n",
+ " continue\n",
+ " \n",
+ " age = int(age)\n",
+ " \n",
+ " lecture_number = project.get_lecture(idx)\n",
+ " if lecture_number != \"LEC001\":\n",
+ " continue\n",
+ " \n",
+ " if age < min_age:\n",
+ " min_age = age\n",
+ " min_age_idx = idx\n",
+ "\n",
+ "print(project.get_major(idx))\n",
+ " "
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "5294702a",
+ "metadata": {},
+ "source": [
+ "### Considering current lecture students (example: LEC001), what is the age of the first student residing at zip code 53715?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "fada2a40",
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ },
+ {
+ "cell_type": "markdown",
+ "id": "68793d99",
+ "metadata": {},
+ "source": [
+ "## Self-practice"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "2eeed867",
+ "metadata": {},
+ "source": [
+ "### How many current lecture (example: LEC001) students are runners? "
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "1ea57e12",
+ "metadata": {},
+ "source": [
+ "### How many current lecture (example: LEC001) students are procrastinators? "
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "cf0ac7c8",
+ "metadata": {},
+ "source": [
+ "### How many current lecture (example: LEC001) students own or have owned a pet?"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "ffd5e10f",
+ "metadata": {},
+ "source": [
+ "### What sleep habit does the youngest student in current lecture (example: LEC001) have?\n",
+ "- try to solve this from scratch, instead of copy-pasting code to find mimimum age"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "f255b95a",
+ "metadata": {},
+ "source": [
+ "### What sleep habit does the oldest student in current lecture (example: LEC001) have?\n",
+ "- try to solve this from scratch, instead of copy-pasting code to find mimimum age"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "db60812c",
+ "metadata": {},
+ "source": [
+ "### Considering current lecture students (example: LEC001), is the first student with age 18 a runner?"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "70a8ac57",
+ "metadata": {},
+ "source": [
+ "### What is the minimum latitude (& corresponding longitude) of a student's place of interest? \n",
+ "- What place is this -> try to enter the lat, long on Google maps?"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "581ea197",
+ "metadata": {},
+ "source": [
+ "### What is the maximum latitude (& corresponding longitude) of a student's place of interest? \n",
+ "- What place is this -> try to enter the lat, long on Google maps?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 23,
+ "id": "333cd894",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "maximum latitude is 78.225\n",
+ "corresponding longitude is 15.626\n"
+ ]
+ }
+ ],
+ "source": [
+ "maximum_latitude = -1000\n",
+ "max_idx = -1 \n",
+ "\n",
+ "for idx in range(project.count()):\n",
+ " latitude = float(project.get_latitude(idx))\n",
+ " if abs(latitude) > 90:\n",
+ " continue\n",
+ " \n",
+ " if latitude > maximum_latitude:\n",
+ " maximum_latitude = latitude\n",
+ " max_idx = idx\n",
+ " \n",
+ "print(\"maximum latitude is \",maximum_latitude)\n",
+ "print(\"corresponding longitude is \",project.get_longitude(max_idx))"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "5f943c98",
+ "metadata": {},
+ "source": [
+ "### What is the minimum longitude (& corresponding latitude) of a student's place of interest? \n",
+ "- What place is this -> try to enter the lat, long on Google maps?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 24,
+ "id": "d3e7fad2",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "minimum longitude is -90.0\n",
+ "corresponding latitude is 40\n"
+ ]
+ }
+ ],
+ "source": [
+ "minimum_longitude = 1000\n",
+ "min_idx = -1 \n",
+ "\n",
+ "for idx in range(project.count()):\n",
+ " longitude = float(project.get_longitude(idx))\n",
+ " if abs(longitude) > 90:\n",
+ " continue\n",
+ " \n",
+ " if longitude < minimum_longitude:\n",
+ " minimum_longitude = longitude\n",
+ " min_idx = idx\n",
+ " \n",
+ "print(\"minimum longitude is \",minimum_longitude)\n",
+ "print(\"corresponding latitude is \",project.get_latitude(min_idx))"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "9b104a50",
+ "metadata": {},
+ "source": [
+ "### What is the maximum longitude (& corresponding latitude) of a student's place of interest?\n",
+ "- What place is this -> try to enter the lat, long on Google maps?"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "fcee0994",
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ }
+ ],
+ "metadata": {
+ "kernelspec": {
+ "display_name": "Python 3 (ipykernel)",
+ "language": "python",
+ "name": "python3"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 3
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython3",
+ "version": "3.10.6"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
diff --git a/sum23/lecture_materials/06_Iteration1/lec_06_Iteration_notes.ipynb b/sum23/lecture_materials/06_Iteration1/lec_06_Iteration_notes.ipynb
index 745cbc2..bcd912c 100644
--- a/sum23/lecture_materials/06_Iteration1/lec_06_Iteration_notes.ipynb
+++ b/sum23/lecture_materials/06_Iteration1/lec_06_Iteration_notes.ipynb
@@ -640,31 +640,47 @@
]
},
{
- "cell_type": "markdown",
- "id": "81abdb38",
+ "cell_type": "code",
+ "execution_count": 3,
+ "id": "de2adb5a",
"metadata": {},
+ "outputs": [],
"source": [
"def is_prime(num):\n",
" \"\"\" returns True if x is prime, false otherwise. \n",
" Assumes x is positive\"\"\"\n",
" \n",
" # try all divisors from 2 to sqrt(num) to check if num is prime\n",
- " divisor = ???\n",
- " while ???:\n",
+ " divisor = 2\n",
+ " while divisor <= math.sqrt(num):\n",
" # check if num is divisible by divisor\n",
- " if num % divisor == ???:\n",
- " return ???\n",
- " divisor ???\n",
+ " if num % divisor == 0:\n",
+ " return False\n",
+ " divisor += 1\n",
" \n",
- " return ???"
+ " return True"
]
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 4,
"id": "e432722e",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "True\n",
+ "True\n",
+ "True\n",
+ "True\n",
+ "False\n",
+ "True\n",
+ "False\n"
+ ]
+ }
+ ],
"source": [
"print(is_prime(1))\n",
"print(is_prime(2))\n",
@@ -677,7 +693,7 @@
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 8,
"id": "c69150ed",
"metadata": {},
"outputs": [],
@@ -688,25 +704,65 @@
" # 2. call is_prime function, to determine if it is prime\n",
" # 3. if you find at least one prime, has_prime should\n",
" # return True, False otherwise\n",
- " pass"
+ " success = False \n",
+ " first_prime = -1 # optional (use if we want to return the value of the prime number)\n",
+ " for x in range(start, end + 1):\n",
+ " x_prime = is_prime(x)\n",
+ " if x_prime:\n",
+ " success = True\n",
+ " first_prime = x # optional \n",
+ " print(str(x) + \" is prime\") # optional \n",
+ " break\n",
+ " return success\n",
+ "# we could return first_prime instead if we wanted to return the prime value itself rather \n",
+ "# than just a boolean True/False"
]
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 9,
"id": "bd3e2027",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "data": {
+ "text/plain": [
+ "False"
+ ]
+ },
+ "execution_count": 9,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
"source": [
"has_prime(14, 16)"
]
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 10,
"id": "0429022b",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "1000003 is prime\n"
+ ]
+ },
+ {
+ "data": {
+ "text/plain": [
+ "True"
+ ]
+ },
+ "execution_count": 10,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
"source": [
"has_prime(1000000, 1001000)"
]
@@ -723,14 +779,36 @@
},
{
"cell_type": "code",
- "execution_count": null,
+ "execution_count": 15,
"id": "cb569b21",
"metadata": {},
- "outputs": [],
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "What is your age?20\n",
+ "What is your age?21\n",
+ "What is your age?30\n",
+ "What is your age?17\n",
+ "What is your age?q\n",
+ "Average age is 22.0\n"
+ ]
+ }
+ ],
"source": [
"# TODO: write an infinite loop using while\n",
+ "total = 0\n",
+ "number_of_users = 0\n",
"\n",
+ "while True:\n",
" # TODO: get user input for age\n",
+ " age = input(\"What is your age?\")\n",
+ " # special case: quit\n",
+ " if age == 'q':\n",
+ " break\n",
+ " \n",
+ " age = int(age)\n",
" \n",
" # Goal: to compute running average\n",
" # It is easy to keep track of total and number of user\n",
@@ -738,10 +816,15 @@
" \n",
" # TODO: discuss what is acceptable range for age\n",
" # What is the guinness world record for oldest person?\n",
- " \n",
+ " valid_age = 0 <= age <= 120\n",
+ " if not valid_age:\n",
+ " continue\n",
+ " \n",
" # TODO: discuss where you will initialize variables to keep track\n",
" # of total and number of user inputs so far and then type the\n",
" # computation lines to compute updated total and running average\n",
+ " number_of_users += 1\n",
+ " total += age\n",
" \n",
" # Now, try entering input as a large number outside of your\n",
" # acceptable age range. What happens to your average?\n",
@@ -752,7 +835,9 @@
" # Let's accept \"q\" as user input for termination\n",
" # TODO: handle that using another conditional\n",
" # Think carefully about where this conditional needs to be in \n",
- " # terms of control flow"
+ " # terms of control flow\n",
+ " \n",
+ "print(\"Average age is \", str(total/number_of_users))"
]
},
{
--
GitLab