\n| Example Use<\/td>\n | Printing list items, counting<\/td>\n | Waiting for correct user input<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Want More?<\/strong><\/p>\nI can add:<\/p>\n \n- Loop exercises (countdown timer, sum calculator, etc.)<\/li>\n
- A quiz or worksheet<\/li>\n
- A visual loop flowchart<\/li>\n
- Let me know what format you\u2019d like next!<\/li>\n<\/ul>\n
Break, Continue, and Pass<\/h2>\n1. break \u2013 Exit the loop early<\/h3>\nWhat it does:<\/strong><\/p>\nImmediately terminates the nearest enclosing loop \u2014 either for or while.<\/p>\n Syntax:<\/strong><\/p>\nfor item in iterable:<\/em>
\nif condition:<\/em>
\nbreak<\/em><\/p>\nExample:<\/strong><\/p>\nfor num in range(10):<\/em>
\nif num == 5:<\/em>
\nbreak<\/em>
\nprint(num)<\/em><\/p>\nOutput:<\/strong><\/p>\n0<\/em>
\n1<\/em>
\n2<\/em>
\n3<\/em>
\n4<\/em><\/p>\nThe loop stops before 5, because break exits the loop.<\/p>\n Real Use Case:<\/strong><\/p>\n\n- Exiting on a condition (e.g. stop searching when found)<\/li>\n
- Validating passwords or attempts<\/li>\n<\/ul>\n
2. Continue \u2013 Skip this iteration<\/h3>\nWhat it does:<\/strong><\/p>\nSkips the rest of the code in the current loop iteration, and moves to the next one.<\/p>\n Syntax:<\/strong><\/p>\nfor item in iterable:<\/em>
\nif condition:<\/em>
\ncontinue<\/em>
\n# code here will be skipped if condition is True<\/em><\/p>\nExample:<\/strong><\/p>\nfor num in range(5):<\/em>
\nif num == 2:<\/em>
\ncontinue<\/em>
\nprint(num)<\/em><\/p>\nOutput:<\/strong><\/p>\n0<\/em>
\n1<\/em>
\n3<\/em>
\n4<\/em><\/p>\nWhen num == 2, it skips the print() and goes to the next loop.<\/p>\n Real Use Case:<\/strong><\/p>\n\n- Skipping invalid data<\/li>\n
- Ignoring certain values (e.g., skip vowels or zeroes)<\/li>\n<\/ul>\n
3. pass \u2013 Do nothing (placeholder)<\/h3>\nWhat it does:<\/strong><\/p>\nLiterally does nothing \u2014 used when a statement is syntactically required but you don\u2019t want any code to run.<\/p>\n Syntax:<\/strong><\/p>\nif condition:<\/em>
\npass # Do nothing (for now)<\/em><\/p>\nExample:<\/strong><\/p>\nfor num in range(3):<\/em>
\nif num == 1:<\/em>
\npass<\/em>
\nprint(f”Number is {num}”)<\/em><\/p>\nOutput:<\/strong><\/p>\nNumber is 0<\/em>
\nNumber is 1<\/em>
\nNumber is 2<\/em><\/p>\nThe pass does nothing \u2014 but it lets the if statement exist without error.<\/p>\n Real Use Case:<\/strong><\/p>\n\n- Placeholder for code you’ll write later<\/li>\n
- Empty function or class definitions<\/li>\n
- Keeping structure while under development<\/li>\n<\/ul>\n
Summary Table:<\/strong><\/p>\n\n\n\n| Keyword<\/th>\n | Purpose<\/th>\n | Ends Loop?<\/th>\n | Skips Iteration?<\/th>\n | Use Case<\/th>\n<\/tr>\n<\/thead>\n | \n\nbreak<\/code><\/td>\n| Exits loop immediately<\/td>\n | <\/b><\/td>\n | X<\/td>\n | Stop a loop early (e.g., on match)<\/td>\n<\/tr>\n | \ncontinue<\/code><\/td>\n| Skips rest of current iteration<\/td>\n | X<\/td>\n | <\/b><\/td>\n | Skip unwanted data<\/td>\n<\/tr>\n | \npass<\/code><\/td>\n| Does nothing; placeholder<\/td>\n | X<\/td>\n | X<\/td>\n | Keep syntax valid without logic<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Bonus Practice Ideas:<\/strong><\/p>\n\n- Loop through numbers and break when divisible by 7<\/li>\n
- Skip even numbers using continue<\/li>\n
- Create an empty function using pass<\/li>\n<\/ul>\n
Looping through strings, lists, and ranges<\/h2>\nYou can use for loops to iterate over sequences in Python \u2014 like strings, lists, and ranges \u2014 because they\u2019re all iterables.<\/p>\n 1. Looping Through a String<\/h3>\nPurpose:<\/strong><\/p>\nEach character in a string can be accessed one by one.<\/p>\n Syntax:<\/strong><\/p>\nfor char in string:<\/em>
\n# do something with char<\/em><\/p>\nExample:<\/strong><\/p>\nword = “Python”<\/em><\/p>\nfor letter in word:<\/em>
\nprint(letter)<\/em><\/p>\n | | | | |