def check_brackets(brackets_row: str) -> bool:
"""
Check whether input string is a valid bracket sequence
Valid examples: "", "()", "()()(()())", invalid: "(", ")", ")("
:param brackets_row: input string to be checked
:return: True if valid, False otherwise
"""
m.clear()
for i in brackets_row:
global some_list
if i == "(":
m.push(i)
if i == ")":
if len(some_list) > 0:
m.pop()
else:
return False
print(some_list)
return len(some_list) == 0
def check_brackets(brackets_row: str) -> bool:
"""
Check whether input string is a valid bracket sequence
Valid examples: "", "()", "()()(()())", invalid: "(", ")", ")("
:param brackets_row: input string to be checked
:return: True if valid, False otherwise
"""
import regex
stack.clear()
for simb in brackets_row:
if simb == "(":
stack.push(")")
elif simb == ")":
if simb != stack.pop():
return False
if len(stack.lis) != 0:
return False
return True
def test_clear(self): my_stack.push(3) my_stack.clear() self.assertIsNone(my_stack.pop())
def setUp(self): my_stack.clear()
def test_clear(self):
my_stack.push(3)
my_stack.clear()
self.assertIsNone(my_stack.pop(), msg="Did you clear the stack?")
