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Introduction to Python
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Introduction to Python

Introduction to Python

1. First Acquaintance with Python
The Very First Steps in PythonHow to Use Comments for ReadabilityPerform Simple Math in PythonHandle More Complex Math in PythonBringing Python Fundamentals Together
2. Variables and Types in Python
How to Store Numbers in PythonPython Naming Rules for VariablesHow to Work with Variables in PythonData Types in PythonChallenge: Converting Kilometers to MilesStore Text with Strings in PythonString Indexing in PythonString Slicing in PythonChallenge: Retrieving Letters from StringString Concatenation in Python
3. Conditional Statements in Python
Boolean Data Type in PythonChallenge: Working with Comparison OperatorsHow to Combine Conditions in PythonChallenge: Working with Logical OperatorsMembership Operators and Type Comparisons in PythonHow to Use if/else Expressions in PythonChallenge: Running a Grocery StoreChallenge: Creating Odd and Even Logicif/elif/else ExpressionsChallenge: Running Grocery Store ExtendedChallenge: Weather Adviser
4. Other Data Types in Python
Python ListsCommon List Methods in PythonChallenge: Updating ListNested Lists in PythonChallenge: Retrieving Information from Nested ListPython TuplesCommon Tuple Methods in PythonChallenge: Updating TupleNested Tuples in PythonChallenge: Retrieving Information from Nested TuplePython DictionariesChallenge: Creating DictionaryCommon Dictionary Methods in PythonChallenge: Updating Dictionary
5. Loops in Python
Explore the while Loop in PythonChallenge: Working with the While LoopExplore the for Loop in PythonChallenge: Working with the For LoopRange Function in PythonChallenge: Using the Range FunctionHow to Iterate Over Indexes in PythonExplore Nested Loops in Python
6. Functions in Python
Built-in Functions in PythonChallenge: Converting HeightsHow to Create Functions in PythonChallenge: Writing First FunctionUse of if/else Statements in Python FunctionsChallenge: Identifying Positive Values Functions Without Return in PythonChallenge: Creating Logging FunctionModifying Functions in PythonChallenge: Updating Logic of the FunctionLambda Functions in PythonChallenge: Creating Lambda Function

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Range Function in Python

To iterate over indices instead of elements, the range() function is essential. It generates a sequence of numbers and returns a range object. This function accepts one, two, or three numeric arguments. With a single argument n, range(n) produces integers from 0 up to, but not including, n.

For example, range(5) generates the numbers 0 to 4.


              
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# Range with one argument
for i in range(5):
  print(i, end = ' ')
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When range() is given two arguments, n and m, it generates integers starting from n up to, but not including, m.

For example, range(5, 10) produces the numbers 5 through 9.


              
123

            
# Range with two arguments
for i in range(5, 10):
  print(i, end = ' ')
copy

When range() receives three arguments n, m, and s it generates numbers starting from n, up to but not including m, incrementing by s each time.

For example, range(10, 30, 5) produces the sequence 10, 15, 20, 25.


              
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# Range with three arguments
for i in range(10, 30, 5):
  print(i, end = ' ')
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