Level 10 : What happens when trying to access a missing key with d.setdefault(k, v)?


d = {'a': 1, 'b': 2}
print(d.setdefault('c', 3))
print(d)

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