Level 1 : What is below code output?


x = [1, 2, 3] 
x.append([4, 5])

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