Level 1 : Which one is correct in the below option about dictionaries.

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