Level 1 : What does the len() function in Python return?

Author: KaivalyaG | Tags: function | 1859+ Python FAQs | Share
random-function | exception | advanced-file-operations | datatype | anchors-(^,-$) | class | aggregating-data-with-functools.reduce() | counter | built-in | complex | destructor | tuple | assignment-operators | using-yield-in-functions | zip-function | typeerror | variable | default-mutable-argument | swapping | string-method | syntax-error | data-structure | why-use-multiprocessing-over-threading?-(gil) | boolean-masking | yield | data-structure | constructor | string-methods | defining-functions | sys-module | string-iteration | using-os-and-pathlib-modules | threading | working-with-temporary-files-using-tempfile | math | min-function | strings | slicing | conversion | context-manager | name-mangling | unit-testing | dicts | benefit | copy | min-max-function | classes | zfill-function | array | precedence-and-associativity | conditional-statement | creating-custom-modules | arithmetic-expression | data-type | bitwise-operator | assert | lists | working-with-dates-and-times | overriding-methods | conditional-statement | matrix | using-map()-for-transformations | numeric | assignment-operator | class-decorators | while-loop | pep | application | conditional-statements | control-flow | __future__ | __all__-attribute | asyncio | sorted | list-method | regex | data_structure | statement | mathematics | using-else-and-finally | access-modifier | floating-point-precision | objects | python-module | expand-tab | rollback | global-variable | using-the-threading-module | factorial-function | introduction-to-multiprocessing | class-and-instance-variable | map-function | matplotlib | type-conversion | operations | using-join()-and-is_alive()-methods | python_version | introduction-to-threads | staticmethod | pandas | regular-expression | loops | python-repl | for | math-copysign | boolean | membership-operators-(in,-not-in) | list-comprehension | sets | counter-function | complex-number | update | key-value-pairs | iterator | filter-function | frozenset | mathematical-function | global-keyword | integers | virtual-environment | pseudocode | formal-and-actual-parameter | list-comprehension | datetime | logical-operators | indexing:-loc-vs-iloc | else | reading:-read(),-readline(),-readlines() | range | logical-operation | multiple-inheritance | encapsulation | operators | syntax-error | iterators | operator-or | class-and-inheritance | bitwise-operator | list-methods-and-slicing | syntax | handling-missing-values-(fillna,-dropna) | pickling--unpickling | loop-control-statements | print-statement | recurssion | built-in-function | list-operation | decorator | quantifiers-(*,-+,-?,-{}) | bitwise | boolean-and-non-boolean | while-loops | binary-operation | filter | mapping-function | call | sorting-and-ranking | turtle | error-handling | string-formatting | matrix-list-comprehension | command-line-parsing | virtual-environment | while-else-loop | using-assertions-(assertequal,-assertraises) | method | sys | lambda | thread-safe-data-structures-(queue.queue) | enumerate() | python-history | match | error | object-attribute | tuple-methods | random | list-comprehensions | loop | exception-handling | invalid-list | escape-operator | dictionary | docstring | file-handling | basic | software-design | center | working-with-file-paths | join | dataframe-and-series-objects | pass | mutable | asyncio-module | python-operators | floats | input | higher-order-function | append | multiple-inheritance | functional-programming | condition | string-method | list-join | input-function | operator-overloading | parameter | identity-operator | time-series-with-pandas | inheritance | function | generators-in-python | opening-files-(open()) | creating-and-starting-threads | sorting | id-function | sum-function | expression | package-management | nested-loop | thread-synchronization | list-vs-tuple | else-statement | operand | joining-and-merging-dataframes | __init_subclass__ | loop-control | postfix | method-overloading | set | built-in-function | slice | generators | string-concatenation | sum() | managing-directories-with-os-and-shutil | design-principle | round | gil | default-arguments | using-lists-as-stacks | multiple-except-blocks | implementation | error-handling | control-flow | touples | python | version | string-manipulation | init | recursion | syntaxerror | list-slicing | head-and-tail | installation | input-function | debugging | list-mutation | methods | round-function | multiprocessing | numpy | overflow | zip | dictionaries | heap-memory | descriptors | working-with-binary-files-(rb,-wb) | print | exception-handling | lambdas | built-in-modules | async | literal-characters-and-special-characters | tuples | odd-number | list,-set,-and-dictionary-comprehensions | functional-programming | shallow-copy | reading-and-writing-files | test-discovery | data-structures-in-python | filtering-and-indexing | identity-operators-(is,-is-not) | collections | exponentiation | library | file_handling | string-slicing | deep-copy | string-slicing | string | arbitrary-arguments-(*args,-**kwargs) | regular-expressions | comment | fabs-function | difference-between-threads-and-processes | thread | indexing | stack | choice | namespace | logical-operator | oop | dictionary-methods | data-type-conversions | module | memory-management | data-type | scientific-notation | return-statement | namedtuple | tuple-unpacking | magic-method | interpreter | list-indexing | writing:-write(),-writelines() | max-min | python-django | dictionary-comprehensions | data-types | comprehension | lambda-functions | data-structures | version-check | identifier | int | single-inheritance | polymorphism | memory | list | attribute | booleans | arithmetic-operation | global | while-and-for-loop | integer | function-and-scope | intering | format | global-variable | binary | collection | type-conversion | type_conversion | feature | generator | split | multithreading | walking-through-directories-using-os.walk() | logical-operator | directory-operations | lambda-function | formatting-with-strftime | type-conversion-and-casting | reading-and-writing-large-files-efficiently | raise | introduction-to-python | set-operation | iterable | class-and-object | file-handling | static-method | precedence | immutability | immutable-data-type | operator-and | string-formatting | oops | keyword | raise-statement | def | with-statement | python-syntax-and-structure | compute | parsing-with-strptime | functions | decimal | control-statement | operator | mysql | import-method | datetime.date,-datetime.time,-datetime.datetime | comparison | identity-operator | function-argument | encoding | inherit | indentation | goto-function | file ...