🔒 if "(]" in s then output false but does true

[tribal hawk]

class Solution(object):
def isValid(self, s):
if "()" or "([])" in s:
return True
elif "(]" in s:
return False

[fair cliff]

@tribal hawk

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Hey @tribal hawk!

Please edit your message to use a code block

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

[amber drum]

"()" or "([])" in s doesn't work like you expect

[agile nebula]

2 things

1. why u inheriting from object
2. that or isnt doing what u think it is

[plush spruce]

!or-gotcha

[fair cliff]

The or-gotcha

When checking if something is equal to one thing or another, you might think that this is possible:

# Incorrect...
if favorite_fruit == 'grapefruit' or 'lemon':
    print("That's a weird favorite fruit to have.")

While this makes sense in English, it may not behave the way you would expect. In Python, you should have complete instructions on both sides of the logical operator.

So, if you want to check if something is equal to one thing or another, there are two common ways:

# Like this...
if favorite_fruit == 'grapefruit' or favorite_fruit == 'lemon':
    print("That's a weird favorite fruit to have.")

# ...or like this.
if favorite_fruit in ('grapefruit', 'lemon'):
    print("That's a weird favorite fruit to have.")

[plush spruce]

@tribal hawk since in returns a boolean, you could return that directly

[tribal hawk]

this is what i did

class Solution(object):
def isValid(self, s):
if s in ("()", "([])", "()[]{}"):
return True
else:
return False

[fair cliff]

Hey @tribal hawk!

Please edit your message to use a code block

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

[tribal hawk]

but like this idk how to make it so no matter what is in s as long as the brackets are closed it will be true

bc im saying only if those 3 strings are inputed then true but it will say false if its {[()]} which should be true

[plush spruce]

!e ```py
print("5" in "456")

[fair cliff]

:white_check_mark: Your 3.12 eval job has completed with return code 0.

True

[plush spruce]

boolean

[plush spruce]

regex?

[tribal hawk]

idk how to like make it automatic

[dreamy canopy]

please don't implement matching parenthesis with a regex

[dreamy canopy]

would you like a direct statement of how to do this or a hint?

[plush spruce]

whats wrong with it?

[tribal hawk]

hint

[dreamy canopy]

totally unsuitable and very hacky

[plush spruce]

is it because it's messy

ah ok

[dreamy canopy]

the hint is: you will definetly need to scan over the characters on by one. you will also definetly need to keep track of some state while you do

[tribal hawk]

damn ok

[fair cliff]

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