Level 1 : What is the output of the following code?


from collections import defaultdict      
alphabet = defaultdict(int)      
alphabet['x'] = 1      
alphabet['y'] = 2      
print(alphabet['z'])

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