Level 9 : Which of the following is a valid string in Python?

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