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updates with more examples and exercises
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‎000_Python_Flow_Control_statement .ipynb

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"<small><small><i>\n",
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"All the IPython Notebooks in **Python Flow Control Statements** lecture series by Dr. Milaan Parmar are available @ **[GitHub](https://github.com/milaan9/03_Python_Flow_Control)**\n",
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"# Python Flow-Control (Decision-Making) Statements\n",
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"\n",
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"In Python programming, decision-making statements are those that **help in deciding the flow of the program**. \n",
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"\n",
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"For example, at times, you might want to execute a block of code only if a particular condition is satisfied. Well, in this case, decision-making statement will be of great help. Let us consider an example to understand this better.\n",
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"\n",
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"Decision making is required when we want to execute a code only if a certain condition is satisfied.\n",
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"\n",
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"The key thing to note about Python's control flow statements and program structure is that it uses **`_indentation_`** to mark blocks. Hence the amount of white space (space or tab characters) at the start of a line is very important. This generally helps to make code more readable but can catch out new users of python."
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"* Suppose you are given a number and are asked to check if it is an even number or not. How would you do it?\n",
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"\n",
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"> The first thought that would pop up your mind is this - **\"If the number is divisible by 2, then it is an even number, else it is an odd number\"**. That's absolutely the right logic. But when this has to be coded, you will need the help of decision-making statements. To understand this, let's now look at how they function."
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{
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"cell_type": "markdown",
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"source": [
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"## Control Flow Statements\n",
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"\n",
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"The flow control statements are divided into **three** categories:\n",
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"\n",
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"1. **Conditional statements**\n",
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"2. **Iterative statements**\n",
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"3. **Transfer/Control statements**\n",
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"\n",
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"<div>\n",
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"<img src=\"img/fcs.png\" width=\"500\"/>\n",
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"</div>"
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]
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{
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"cell_type": "markdown",
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"source": [
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"## Conditional statements\n",
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"\n",
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"In Python, condition statements act depending on whether a given condition is true or false. You can execute different blocks of codes depending on the outcome of a condition. Condition statements always evaluate to either **`True`** or **`False`**.\n",
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"\n",
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"There are **four** types of conditional statements:\n",
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"\n",
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"1. **[if](https://github.com/milaan9/03_Python_Flow_Control/blob/main/001_Python_if_statement.ipynb)**\n",
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"2. **[if-else](https://github.com/milaan9/03_Python_Flow_Control/blob/main/002_Python_if_else_statement.ipynb)**\n",
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"3. **[if-elif-else](https://github.com/milaan9/03_Python_Flow_Control/blob/main/003_Python_if_elif_else_statement%20.ipynb)**\n",
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"4. **[nested-if](https://github.com/milaan9/03_Python_Flow_Control/blob/main/004_Python_Nested_if_statement.ipynb)**"
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]
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},
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{
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"cell_type": "markdown",
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"source": [
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"## Iterative statements\n",
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"\n",
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"In Python, iterative statements allow us to execute a block of code repeatedly as long as the condition is **`True`**. We also call it a loop statements.\n",
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"\n",
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"Python provides us the following **two** loop statement to perform some actions repeatedly\n",
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"\n",
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"1. **[for loop](https://github.com/milaan9/03_Python_Flow_Control/blob/main/005_Python_for_Loop.ipynb)**\n",
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"2. **[while loop](https://github.com/milaan9/03_Python_Flow_Control/blob/main/006_Python_while_Loop.ipynb)**"
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]
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},
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"## Transfer statements\n",
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"\n",
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"In Python, transfer statements are used to alter the program’s way of execution in a certain manner. For this purpose, we use **three** types of transfer statements.\n",
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"\n",
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"1. **[break statement](https://github.com/milaan9/03_Python_Flow_Control/blob/main/007_Python_break_continue_pass_statements.ipynb)**\n",
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"2. **[continue statement](https://github.com/milaan9/03_Python_Flow_Control/blob/main/007_Python_break_continue_pass_statements.ipynb)**\n",
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"3. **[pass statements](https://github.com/milaan9/03_Python_Flow_Control/blob/main/007_Python_break_continue_pass_statements.ipynb)**"
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