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Commit 7366f85

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Added PyBasics-2.ipynb
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‎README.md

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@@ -8,7 +8,14 @@ This repo contains different code snippets from basic to advanced python concept
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This folder contains basic level code structures.
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1. [PyBasics-1.ipynb](basic/PyBasics-1.ipynb) \
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The notebook contains info about: Python 35 Keywords, Python Identifiers(Variables, Constants, Literals), Python Data Types, Type Casting, Python Operators, Python Namespace and Variable Scope.
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This notebook contains info about: \
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Python 35 Keywords, Python Identifiers(Variables, Constants, Literals), Python Data Types, Type Casting, Python Operators, Python Namespace and Variable Scope.
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2. [PyBasics-2.ipynb](basic/PyBasics-2.ipynb) \
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This notebook contains info about: \
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Python if...else, for Loop, for loop with else, while Loop, while loop with else, break Statement, continue and pass Statement
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# Intermediate (Upcoming)
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‎basic/PyBasics-2.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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"**Table of contents**<a id='toc0_'></a> \n",
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"- [Python if...else](#toc1_) \n",
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"- [Python for Loop](#toc2_) \n",
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" - [Python for loop with else](#toc2_1_) \n",
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"- [Python while Loop](#toc3_) \n",
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" - [Python While loop with else](#toc3_1_) \n",
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"- [Python break Statement](#toc4_) \n",
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"- [Python continue Statement](#toc5_) \n",
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"- [Python pass Statement](#toc6_) \n",
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"\n",
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"<!-- vscode-jupyter-toc-config\n",
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"\tnumbering=false\n",
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"\tanchor=true\n",
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"\tflat=false\n",
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"\tminLevel=1\n",
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"\tmaxLevel=6\n",
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"\t/vscode-jupyter-toc-config -->\n",
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"<!-- THIS CELL WILL BE REPLACED ON TOC UPDATE. DO NOT WRITE YOUR TEXT IN THIS CELL -->"
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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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"# <a id='toc1_'></a>[Python if...else](#toc0_)\n",
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"\n",
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"\n",
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"- we use the if statement to run a block code only when a certain condition is met.\n",
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"\n",
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"If the condition evaluates to False,\n",
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"- the code inside else is executed\n",
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"- the code inside if is skipped\n",
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"\n",
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"\n",
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"The `if...else` statement is used to execute a block of code among two alternatives.\n",
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"- However, if we need to make a choice between more than two alternatives, then we use the `if...elif...else` statement.\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": 1,
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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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"Zero\n",
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"This statement is always executed\n"
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]
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}
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],
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"source": [
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"number = 0\n",
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"\n",
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"if number > 0:\n",
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" print(\"Positive number\")\n",
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"\n",
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"elif number == 0:\n",
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" print('Zero')\n",
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"else:\n",
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" print('Negative number')\n",
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"\n",
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"print('This statement is always executed')"
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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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"There are 2 types of loops in Python:\n",
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"- for loop\n",
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"- while loop\n",
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"\n",
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"# <a id='toc2_'></a>[Python for Loop](#toc0_)\n",
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"\n",
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"In Python, a for loop is used to iterate over sequences such as lists, tuples, string, etc."
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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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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Swift\n",
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"Python\n",
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"Go\n",
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"JavaScript\n"
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]
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}
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],
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"source": [
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"languages = ['Swift', 'Python', 'Go', 'JavaScript']\n",
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"\n",
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"# run a loop for each item of the list\n",
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"for language in languages:\n",
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" print(language)"
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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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"## <a id='toc2_1_'></a>[Python for loop with else](#toc0_)\n",
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"\n",
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"- A for loop can have an optional else block. \n",
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"- The else part is executed when the loop is exhausted (after the loop iterates through every item of a sequence).\n",
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"\n",
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"**Note: The else block will not execute if the for loop is stopped by a break statement.**"
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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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"name": "stdout",
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"output_type": "stream",
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"text": [
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"0\n",
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"1\n",
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"5\n",
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"No items left.\n",
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"101\n"
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]
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}
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],
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"source": [
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"digits = [0, 1, 5]\n",
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"\n",
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"for i in digits:\n",
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" print(i)\n",
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"else:\n",
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" print(\"No items left.\") # Executed\n",
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"\n",
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"#############################################################\n",
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"\n",
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"digits = [101, 111, 523]\n",
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"\n",
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"for i in digits:\n",
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" print(i)\n",
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" break\n",
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"else:\n",
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" print(\"No items left.\") # Not Executed "
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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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"# <a id='toc3_'></a>[Python while Loop](#toc0_)\n",
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"\n",
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"Python while loop is used to run a block code until a certain condition is met.\n",
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"\n",
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"## <a id='toc3_1_'></a>[Python While loop with else](#toc0_)\n",
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"\n",
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"- In Python, a while loop may have an optional else block.\n",
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"- Here, the else part is executed after the condition of the loop evaluates to False.\n",
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"\n",
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"**Note: The else block will not execute if the while loop is terminated by a break statement.**"
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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": 6,
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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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"Inside loop1\n",
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"Inside else2\n",
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"Outside loop2\n"
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]
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}
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],
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"source": [
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"counter = 0\n",
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"\n",
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"while counter < 3:\n",
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" # loop ends because of break\n",
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" # the else part is not executed \n",
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" if counter == 1:\n",
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" break\n",
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"\n",
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" print('Inside loop1')\n",
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" counter = counter + 1\n",
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"else:\n",
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" print('Inside else1')\n",
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"\n",
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"#############################################################\n",
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"\n",
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"counter = 5\n",
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"\n",
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"while counter < 3:\n",
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" # loop ends because of break\n",
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" # the else part is not executed \n",
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" if counter == 1:\n",
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" break\n",
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"\n",
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" print('Inside loop2')\n",
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" counter = counter + 1\n",
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"else:\n",
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" print('Inside else2')\n",
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"\n",
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"print('Outside loop2')"
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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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"# <a id='toc4_'></a>[Python break Statement](#toc0_)\n",
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"The break statement is used to terminate the loop immediately when it is encountered.\n",
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"\n",
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"# <a id='toc5_'></a>[Python continue Statement](#toc0_)\n",
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"The continue statement is used to skip the current iteration of the loop and the control flow of the program goes to the next iteration.\n",
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"\n",
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"# <a id='toc6_'></a>[Python pass Statement](#toc0_)\n",
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"- In Python programming, the pass statement is a null statement which can be used as a placeholder for future code.\n",
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"- Suppose we have a loop or a function that is not implemented yet, but we want to implement it in the future. In such cases, we can use the pass statement.\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": 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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"1\n",
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"3\n",
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"5\n",
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"7\n",
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"9\n"
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]
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}
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],
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"source": [
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"# program to print odd numbers from 1 to 10\n",
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"num = 0\n",
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"\n",
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"while num < 10:\n",
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" num += 1\n",
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" if (num % 2) == 0:\n",
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" continue\n",
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" print(num)\n",
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"\n",
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"#########################################\n",
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"# program to print odd numbers from 1 to 10\n",
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"number = 1\n",
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"while (number%2 != 0) and (number < 10) :\n",
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" print(number) \n",
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" number += 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": 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": "3.10.4"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}

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