Minimum and maximum in a for loop for any data set

Here is the URL to what I have on my screen:
https://app.dataquest.io/m/2000313/conditional-statements-assessment/2/question-2

Here is what I wrote on my screen. Please help
open_file = open(‘pokemon starter.csv’)
read_file = reader(open_file)
starters = list(read_file)
header = starters[0]
starters = starters[1:]

for min_max in starters[1:]:
first_type = starters[1]
pokemon_typ = starters[0]
short_F = starters[23]

if fire in starters[1:]:
    fire_starters.append(pokemon_typ)
elif water in starters[1:]:
    water_starters.append(pokemon_typ)

for minimum in fire_starters:
if minimum > ‘36’:
minimum = ‘36’
print(minimum)

for minimum in water_starters:
if minimum > ‘36’
minimum = ‘36’
print(minimum)

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