Level 1 : What does this dictionary comprehension return?


d = {x: x**2 for x in range(3)}
print(d)

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