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Core Concepts

Variables Numeric expressions Strings Booleans Conditional statements for loops while loops Functions

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Lists Tuples Dictionaries Sets List slicing List comprehensions Nested data Sorting collections

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Input validation Exceptions Assertions Decomposition Pure functions Linear search Binary search Recursion

Practical Programs

Reading text files Writing JSON files Command-line arguments Simple class Unit test HTTP request concept Queue with deque CLI todo program

Intro to Programming / Problem Solving

Linear search

Learn Linear search in Intro to Programming with a focused explanation, a topic-specific example, and a mastery check.

12 min read • Intermediate

intro-programming-022.py

python

def find(items,target):
 for i,item in enumerate(items):
  if item==target:return i
 return -1
print(find(['a','b','c'],'c'))

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