human
Check whether the given string is a valid identifier | Function that returns true if str1 is a valid identifier.
If first character is invalid.
Traverse the for the rest of the characters.
is a valid identifier.
Driver code"
How can the above be solved in Python?
 ... Can you provide a code to check whether the given string is a valid identifier and the other steps required?
assistant
#Here is code to check whether the given string is a valid identifier and the other steps required.
 def isValid ( str1 , n ) :
	if ( ( ( ord ( str1 [ 0 ] ) >= ord ( ' a ' ) and ord ( str1 [ 0 ] ) <= ord ( ' z ' ) ) or ( ord ( str1 [ 0 ] ) >= ord ( ' A ' ) and ord ( str1 [ 0 ] ) <= ord ( ' Z ' ) ) or ord ( str1 [ 0 ] ) == ord ( ' _ ' ) ) == False ) :
		return False
	for i in range ( 1 , len ( str1 ) ) :
		if ( ( ( ord ( str1 [ i ] ) >= ord ( ' a ' ) and ord ( str1 [ i ] ) <= ord ( ' z ' ) ) or ( ord ( str1 [ i ] ) >= ord ( ' A ' ) and ord ( str1 [ i ] ) <= ord ( ' Z ' ) ) or ( ord ( str1 [ i ] ) >= ord ( '0' ) and ord ( str1 [ i ] ) <= ord ( '9' ) ) or ord ( str1 [ i ] ) == ord ( ' _ ' ) ) == False ) :
			return False
	return True
str1 = " _ geeks123"
n = len ( str1 )
if ( isValid ( str1 , n ) ) :
	print ( " Valid " )
else :
	print ( " Invalid " )