human
Change the given string according to the given conditions | Function to proofread the spells.
Loop to iterate over the characters of the string.
Push the current character c in the stack.
Check for Rule 1.
Check for Rule 2.
To store the resultant string.
Loop to iterate over the characters of stack.
Return the resultant string.
Given string str.
Function Call"
How can the above be solved in Python?
 ... What is a code to change the given string according to the given conditions and the other steps required?
assistant
#Here is code to change the given string according to the given conditions and the other steps required.
 def proofreadSpell ( str ) :
	result = [ ]
	for c in str :
		result . append ( c )
		n = len ( result )
		if ( n >= 3 ) :
			if ( result [ n - 1 ] == result [ n - 2 ] and result [ n - 1 ] == result [ n - 3 ] ) :
				result . pop ( )
		n = len ( result )
		if ( n >= 4 ) :
			if ( result [ n - 1 ] == result [ n - 2 ] and result [ n - 3 ] == result [ n - 4 ] ) :
				result . pop ( )
	resultStr = " "
	for c in result :
		resultStr += c
	return resultStr
str = " hello "
print ( proofreadSpell ( str ) )