Zip
Zip is an operation that combines corresponding elements from multiple iterables or collections into paired or otherwise combined results.
Python How-To
zip is a Python built-in function that returns an iterator of tuples combining corresponding elements from multiple iterables.
- How it is used
- Aligns related iterables for readable loops and key–value dictionary construction.
- How deep it goes
- Works through tuple order, unpacking, unequal lengths, and alternatives without exploring iterator implementation internals.
- Examples
- Pairs task IDs with titles, aligns tasks with dates and locations, and maps CSV headers to row values.
- What you can do after
- Apply it via Python's `zip` to iterate aligned values or build dictionaries, choosing a length-handling approach when needed.
Python Workout: 50 ten-minute exercises
zip is a Python built-in function that aggregates corresponding elements from multiple iterables into tuples until the shortest iterable is exhausted.
- How it is used
- Pairs corresponding values across iterables while supporting iterator-based processing.
- How deep it goes
- Defines indexed tuple production and shortest-input termination, then practices reimplementing the behavior with a generator.
- Examples
- Uses zip('abc', [10, 20, 30]) and a myzip exercise pairing [10, 20, 30] with 'abc'.
- What you can do after
- Build it from scratch by writing a generator that yields paired tuples until an input is exhausted.
Read how Python Workout: 50 ten-minute exercises explains zip →
Julia as a Second Language
zip is a Julia function that combines corresponding elements from multiple iterables into tuples.
- How it is used
- Combines parallel iterables when paired data must become tuples or dictionary entries.
- How deep it goes
- Explains the iterable result, materialization with collect, and direct consumption by Dict through compact examples.
- Examples
- Uses word-number pairs and alphabet-to-substitute-alphabet mappings as concrete examples.
- What you can do after
- Apply it via collect or Dict to turn corresponding arrays into tuple collections or lookup mappings.
Learn Haskell by Example
zip is a standard Haskell function that combines two lists element-wise into a list of pairs, stopping when the shorter list ends.
- How it is used
- Combines parallel lists when constructing line-numbered text or associative lists.
- How deep it goes
- Explains the polymorphic type, element-wise behavior, shortest-list rule, unzip limitation, and zipWith relationship.
- Examples
- Demonstrates pairing numbers with strings or characters and truncating results when one input list is shorter.
- What you can do after
- Apply zip and zipWith to combine lists element-wise and recognize truncation caused by unequal lengths.
The Quick Python Book, Fourth Edition
zip is a Python built-in function that aggregates corresponding elements from two or more iterables into tuples, stopping when the shortest iterable is exhausted.
- How it is used
- Combines parallel iterable data for paired looping, inspection, or CSV output.
- How deep it goes
- Defines tuple aggregation and shortest-input termination, then demonstrates iterator conversion and CSV consumption.
- Examples
- Uses unequal lists and paired weather dates and temperatures written to a CSV file.
- What you can do after
- Apply zip() to pair parallel data and pass its iterator to a CSV writer or convert it with list().
Read how The Quick Python Book, Fourth Edition explains zip →
Related concepts
- tupleproduces · A tuple is a finite, ordered collection of elements treated as a single composite value or record.
- iterableuses · An iterable is an object or value that provides or supports a protocol for producing its elements sequentially.
- generatorimplemented by · A generator is a language construct or computation that produces values incrementally on demand, typically suspending and resuming while preserving its state.
- iteratorproduces · An iterator is an object or abstraction that provides successive values from a sequence or data source through a traversal protocol.
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