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Solved Basics of Python Assignment-1
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‎Assignment-1.ipynb

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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Operators are something by which we ca perform operations like adding,multiplying,dividing\n",
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"### Values are something that we can store in memory or variable and use it later \n",
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"\n",
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"- Operators are :- +, *, -, /\n",
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"- Values :- 'hello', -87.8\n",
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"\n"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## String :- String is something that is wrapped in single or doublequotes, It is a value\n",
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"## Variable :- Variables are used to store data or value in it\n",
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"- for ex:- spam = \"Spam\"\n",
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"- here spam is a variable that holds string value named \"Spam\"."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {},
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"outputs": [],
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"source": [
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"spam = 'Spam'"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"'Spam'"
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]
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},
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"execution_count": 3,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"spam"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"str"
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]
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},
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"execution_count": 4,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"type(spam)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Three Types of DataForms are Int,Float,String"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## An expression is a combination of values, variables, operators, and calls to functions. Expressions need to be evaluated."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 9,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"The sum of the two numbers are 5\n"
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]
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}
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],
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"source": [
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"##Expression example\n",
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"b = 2\n",
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"a = 3\n",
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"## here a+b is an expression\n",
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"sum = a+b\n",
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"print('The sum of the two numbers is {}'.format(sum))\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 11,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"20\n"
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]
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}
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],
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"source": [
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"## declaration means we are assigning values to a variable.Here spam=10 is declaration of variable\n",
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"spam=10\n",
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"## expression means when we are performing operations on it.Here spam *2 is expression\n",
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"spam*2\n",
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"print(spam*2)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 12,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"23"
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]
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},
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"execution_count": 12,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"## Here bacon will contain value as 23 because we are adding by +1 to variable bacon which is storing integer value.\n",
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"bacon = 22\n",
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"bacon + 1\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 14,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"'spamspamspam'"
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]
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},
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"execution_count": 14,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"## for both the expressions value would be same because its concatinating 2 strings which holds 3 times spam\n",
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"## same for spam*3 it multiplies by 3\n",
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"'spam' + 'spamspam'\n",
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"'spam' * 3"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 21,
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"metadata": {},
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"outputs": [
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{
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"ename": "SyntaxError",
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"evalue": "invalid syntax (<ipython-input-21-bbbb2abd74f6>, line 4)",
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"output_type": "error",
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"traceback": [
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"\u001b[1;36m File \u001b[1;32m\"<ipython-input-21-bbbb2abd74f6>\"\u001b[1;36m, line \u001b[1;32m4\u001b[0m\n\u001b[1;33m 2eggs=100\u001b[0m\n\u001b[1;37m ^\u001b[0m\n\u001b[1;31mSyntaxError\u001b[0m\u001b[1;31m:\u001b[0m invalid syntax\n"
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]
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}
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],
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"source": [
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"##Why is it that eggs is a true variable name but 100 is not?\n",
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"## Ans :- A variable name cannot start with a number.Its defined in the rules of python variable declaration.\n",
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"\n",
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"2eggs=100\n",
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"2eggs"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 27,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"3\n",
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"3.0\n",
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"3\n",
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"<class 'str'>\n"
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]
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}
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],
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"source": [
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"## we can use int,float,str functions to convert values\n",
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"a=3\n",
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"print(a)\n",
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"k=float(a)\n",
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"print(k)\n",
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"z=str(a)\n",
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"print(z)\n",
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"print(type(z))"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 30,
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"metadata": {},
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"outputs": [
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{
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"ename": "TypeError",
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"evalue": "can only concatenate str (not \"int\") to str",
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"output_type": "error",
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"traceback": [
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"\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
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"\u001b[1;31mTypeError\u001b[0m Traceback (most recent call last)",
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"\u001b[1;32m<ipython-input-30-140d7e9d596f>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mf\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;34m'I have eaten '\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;36m99\u001b[0m \u001b[1;33m+\u001b[0m \u001b[1;34m' burritos.'\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
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"\u001b[1;31mTypeError\u001b[0m: can only concatenate str (not \"int\") to str"
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]
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}
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],
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"source": [
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"f = 'I have eaten ' + 99 + ' burritos.'"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 32,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"I have eaten 99 burritos.\n"
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]
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}
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],
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"source": [
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"## In the above case i will convert 99 into string and then perform the following expression.I will do type casting\n",
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"f = 'I have eaten ' + str(99) + ' burritos.'\n",
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"print(f)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": []
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.5"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 4
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}

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