Level 1 : Which of the following is an invalid variable?

Author: PravallikaG | Tags: variable | 1736+ Python FAQs | Share
zfill-function | matplotlib | integer | min-function | classes | identity-operator | debugging | memory-management | oops | destructor | assert | while-else-loop | docstring | turtle | zip | counter-function | lists | append | file | collection | scientific-notation | staticmethod | while-and-for-loop | overflow | version | mutable | loop | id-function | else-statement | lambda-function | binary-operation | async | floating-point-precision | heap-memory | functional-programming | arithmetic-operation | command-line-parsing | asyncio-module | feature | encoding | conversion | list-comprehension | dictionaries | comprehension | string-manipulation | objects | name-mangling | fabs-function | sys | round-function | matrix | deep-copy | numeric | __init_subclass__ | function-argument | filter | collections | global-keyword | exponentiation | python-django | mapping-function | datetime | dictionary | filter-function | for | built-in-function | type_conversion | default-mutable-argument | error | data-type | iterator | version-check | precedence-and-associativity | match | string-concatenation | list-operation | function | min-max-function | operator-or | global-variable | tuple | control-statement | input | oop | sorted | inheritance | attribute | sum-function | print | input-function | higher-order-function | __future__ | invalid-list | head-and-tail | threading | file-handling | list-mutation | inherit | function-and-scope | slice | operations | rollback | object-attribute | module | decorator | data-type | exception-handling | gil | string-slicing | array | counter | operators | multiple-inheritance | magic-method | escape-operator | swapping | raise | generators-in-python | choice | list-comprehension | exception | string-method | math-copysign | application | built-in | enumerate() | with-statement | syntax-error | library | logical-operator | pseudocode | design-principle | control-flow | package-management | logical-operator | frozenset | factorial-function | sum() | operator-overloading | condition | operand | bitwise | loop-control | loops | zip-function | memory | mysql | complex | installation | random-function | center | asyncio | context-manager | call | string-iteration | while-loop | pickling-&-unpickling | split | class-and-instance-variable | goto-function | error-handling | immutability | postfix | virtual-environment | return-statement | generators | methods | string-slicing | indentation | iterable | tuple-unpacking | sorting | expression | conditional-statement | data-structure | parameter | bitwise-operator | class | multithreading | string-method | map-function | typeerror | list-method | __all__-attribute | class-and-inheritance | touples | update | class-and-object | encapsulation | format | python-repl | random | expand-tab | decimal | identifier | multiprocessing | lambda | python-module | operator-and | numpy | operator | mathematics | range | binary | boolean-and-non-boolean | access-modifier | software-design | regex | file-handling | file_handling | conditional-statement | thread | list | arithmetic-expression | global | namespace | keyword | indexing | shallow-copy | basic | math | method | nested-loop | comment | round | data-structure | global-variable | list-indexing | compute | data-structures | type-conversion | pandas | yield | statement | recurssion | syntax | import-method | identity-operator | string | benefit | datatype | sys-module | exception-handling | regular-expression | list-slicing | boolean | max-min | type-conversion | logical-operation | odd-number | complex-number | syntaxerror | int | virtual-environment | formal-and-actual-parameter | string-formatting | def | interpreter | descriptors | string-formatting | recursion | immutable-data-type | polymorphism | matrix-list-comprehension | functions | control-flow | implementation | slicing | init | dicts | list-join | generator | input-function | copy | stack | mathematical-function | list-vs-tuple | pep | python-history | comparison | bitwise-operator | namedtuple | python | static-method | variable | set | join | assignment-operator | precedence | set-operation | python_version | constructor | built-in-function | data_structure | syntax-error | lambdas | print-statement ...