Practice

Exercise library

All 811 graded exercises. Each opens in its lesson, where the examples that teach it are right above.

811 exercises · page 4 of 14

Progress with zero tasksTrack 5 · Parameters and argumentsEdge cases · ●●Members
Return a line totalTrack 5 · Return valuesGuided · ●Members
Delivery fee with early returnsTrack 5 · Return valuesChallenge · ●●Members
Average rating, or None when there are no ratingsTrack 5 · Return valuesEdge cases · ●●Members
The price with VAT crashesTrack 5 · Return valuesDebugging · ●●Members
Format a price with a default currencyTrack 5 · Default and keyword argumentsGuided · ●Members
Parcel cost with optional extrasTrack 5 · Default and keyword argumentsChallenge · ●●Members
Customers share a basketTrack 5 · Default and keyword argumentsDebugging · ●●●Members
Split a restaurant billTrack 5 · Default and keyword argumentsEdge cases · ●●Members
Loyalty points without a globalTrack 5 · Scope: local and global variablesGuided · ●●Members
Book seats against a capacityTrack 5 · Scope: local and global variablesChallenge · ●●Members
The total is not definedTrack 5 · Scope: local and global variablesDebugging · ●●Members
Convert currencies using constantsTrack 5 · Scope: local and global variablesEdge cases · ●●Members
Split minutes into hours and minutesTrack 5 · Returning multiple valuesGuided · ●Members
Summarise sensor readingsTrack 5 · Returning multiple valuesChallenge · ●●●Members
The average price is tinyTrack 5 · Returning multiple valuesDebugging · ●●Members
An instalment plan that adds up exactlyTrack 5 · Returning multiple valuesEdge cases · ●●●Members
Document a VAT functionTrack 5 · Docstrings and type hintsGuided · ●Members
A documented grading functionTrack 5 · Docstrings and type hintsChallenge · ●●Members
The label doesn't match its docstringTrack 5 · Docstrings and type hintsDebugging · ●●Members
Count late arrivalsTrack 5 · Docstrings and type hintsEdge cases · ●●Members
An invoice total from helper functionsTrack 5 · Decomposition: building programs from functionsGuided · ●●Members
A report-card line from three functionsTrack 5 · Decomposition: building programs from functionsChallenge · ●●●Members
Running the program does nothingTrack 5 · Decomposition: building programs from functionsDebugging · ●●Members
Split a shipping quote into functionsTrack 5 · Decomposition: building programs from functionsRefactoring · ●●●Members
Total any number of quantitiesTrack 5 · Any number of arguments: *args and **kwargsGuided · ●●Members
Build an audit-log line from named detailsTrack 5 · Any number of arguments: *args and **kwargsChallenge · ●●●Members
The cheapest offer, or noneTrack 5 · Any number of arguments: *args and **kwargsEdge cases · ●●Members
The order summary shows brackets and quotesTrack 5 · Any number of arguments: *args and **kwargsDebugging · ●●Members
Discounted prices without touching the originalsTrack 5 · Pure functions and side effectsGuided · ●●Members
A pure reorder planTrack 5 · Pure functions and side effectsChallenge · ●●●Members
The register gets reorderedTrack 5 · Pure functions and side effectsDebugging · ●●●Members
Remove duplicate visitor IDsTrack 5 · Pure functions and side effectsEdge cases · ●●●Members
Write factorial recursivelyTrack 5 · Recursion: functions that call themselvesGuided · ●●Members
Sum the digits of an account numberTrack 5 · Recursion: functions that call themselvesChallenge · ●●●Members
Raising to the power of 0 crashesTrack 5 · Recursion: functions that call themselvesDebugging · ●●●Members
Binary digits, recursivelyTrack 5 · Recursion: functions that call themselvesEdge cases · ●●●●Members
Sort products by priceTrack 5 · Functions as values, lambda and key=Guided · ●●Members
Apply a pricing rule passed as a functionTrack 5 · Functions as values, lambda and key=Challenge · ●●●Members
Finding the most delayed flight failsTrack 5 · Functions as values, lambda and key=Debugging · ●●●Members
Rank students with tiesTrack 5 · Functions as values, lambda and key=Edge cases · ●●●●Members
First and last deliveryTrack 6 · Lists: many values under one nameGuided · ●
Readings over the limitTrack 6 · Lists: many values under one nameChallenge · ●●
Look up a shelf safelyTrack 6 · Lists: many values under one nameEdge cases · ●●
Check the attendance listTrack 6 · Lists: many values under one nameChallenge · ●
Restock and sellTrack 6 · Changing lists: methods and mutabilityGuided · ●Members
Top three without reorderingTrack 6 · Changing lists: methods and mutabilityChallenge · ●●Members
The vanishing booking listTrack 6 · Changing lists: methods and mutabilityDebugging · ●●Members
Merge two waiting listsTrack 6 · Changing lists: methods and mutabilityEdge cases · ●●●Members
Most recent transactionsTrack 6 · Slicing: taking part of a listGuided · ●Members
One page of the catalogueTrack 6 · Slicing: taking part of a listChallenge · ●●Members
First half versus second halfTrack 6 · Slicing: taking part of a listEdge cases · ●●●Members
Alternate the shiftsTrack 6 · Slicing: taking part of a listChallenge · ●●Members
Cheapest and dearestTrack 6 · Tuples and unpackingGuided · ●Members
Total an invoice of tuplesTrack 6 · Tuples and unpackingChallenge · ●●Members
Split a log entry with a starTrack 6 · Tuples and unpackingEdge cases · ●●●Members
The pallet that wouldn't moveTrack 6 · Tuples and unpackingDebugging · ●●Members
Price check at the tillTrack 6 · Dictionaries: looking things up by keyGuided · ●Members
Record a saleTrack 6 · Dictionaries: looking things up by keyChallenge · ●●Members
Fees for unknown membersTrack 6 · Dictionaries: looking things up by keyDebugging · ●●Members