Identifier in Python

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*Memo:

• My post explains naming convention.
• My post explains a variable assignment.
• My post explains a function (1).

An identifier:

• can have letters, _ and the digits except for the 1st character.
• can be a reserved soft keyword.
• cannot start with a digit.
• cannot be a reserved keyword.
• Identifiers and keywords explains an identifier more.

<Reserved keywords>:

False	await	else	import	pass
None	break	except	in	raise
True	class	finally	is	return
and	continue	for	lambda	try
as	def	from	nonlocal	while
assert	del	global	not	with
async	elif	if	or	yield

<Reserved soft keywords>:

match	case	type	_

<Variable>:

True_100 = 'abc'
tRuE_100 = 'abc'
_True100 = 'abc'
True100_ = 'abc'
match = 'abc'
case = 'abc'
type = 'abc'
_ = 'abc'
# No error

True-100 = 'abc'
100_True = 'abc'
True = 'abc'
class = 'abc'
def = 'abc'
# Error

<Function & Parameter>:

def True_100(True_100): pass
def tRuE_100(tRuE_100): pass
def _True100(_True100): pass
def True100_(True100_): pass
def match(match): pass
def case(case): pass
def type(type): pass
def _(_): pass
# No error

def True-100(True-100): pass
def 100_True(100_True): pass
def True(True): pass
def class(class): pass
def def(def): pass
# Error

<Class>:

class True_100: pass
class tRuE_100: pass
class _True100: pass
class True100_: pass
class match: pass
class case: pass
class type: pass
class _: pass
# No error

class True-100: pass
class 100_True: pass
class True: pass
class class: pass
class def: pass
# Error