Level 9 : What is the output?


def add_to(num, target=[]):
    target.append(num)
    return target

print(add_to(1))
print(add_to(2))
print(add_to(3, []))
print(add_to(4))

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