Edit: I learned something. I completely misunderstood how to construct classes in Python. What confused me is that there seems to be redundant code with Python. I have a question about that, and then I think I can marked this solved.
So, here’s my code that I used to test this out:
class PaintMe():
color = None
def __init__(self, color):
self.color = color
this_is_the_color = color
def what_is_the_color(self):
print (self.color)
Painting = PaintMe(color = "Blue")
Painting.what_is_the_color()What is majorly confusing me is, why is there a
“self.color = color”
line at all? Isn’t that completely superfluous, redundant, self referential, and unnecessary? That was what threw me off. It confused my brain right out my rear end. I assumed, looking at example code of classes, that you would use that line to pass the argument “color” to a variable of your choosing with whatever name you decide.
Like, for example,
“file_name = self.file”, where “file” is passed as an argument in the class.
I figured out how to fix my code, but it only begs more questions. Why is that line even necessary?
</ EDIT>
Quick explanation: in Exercise 36 we’re challenged with making a text based adventure. I am just adding a few extra things for fun, like the ability to find a piece of armor that has stats. The stats are read from a text file. I am putting it into a class in case I want to make multiple pieces of armor. I’m having trouble figuring out classes.
According to the entirety of the internet and Python documentation, I should be able to define class variable things in
def __init__(self, variable):
self.thing = variable
variablething = self.thingBut with that code, I get the error “NameError: name ‘self’ not defined”. What’s that deal?
My research shows that it means that ‘self’ hasn’t been declared yet, but of course it has, it’s a specially reserved part of Python. This code throws the same error in Python 2.7.13 and 3.6.2.
file_target = 'leatherarmor.txt'
class Magic():
FROS = 0.0
FIRE = 0.0
POIS = 0.0
STOR = 0.0
WATE = 0.0
EART = 0.0
DARK = 0.0
LIGH = 0.0
MADN = 0.0
VOID = 0.0
class Armor(object):
def __init__(self, file):
self.file = file
file_name = self.file
armor_file = open(file_name)
file_lines = armor_file.readlines()
ARM = 0
DUR = 0.00
DEX = 0
LVL = 0
STA = 0.00
WEI = 0.0
VAL = 000.00
MAG = False
SOK = False
NSK = 0
GEM = None
TMAG = Magic()
for line in file_lines:
temp_line = line
temp_atr = line[:3]
if (temp_atr == "ARM"):
ARM = int(temp_line[6:])
elif (temp_atr == "DUR"):
DUR = float(temp_line[6:])
elif (temp_atr == "DEX"):
DEX = int(temp_line[6:])
elif (temp_atr == "LVL"):
LVL = int(temp_line[6:])
elif (temp_atr == "STA"):
STA = float(temp_line[6:])
elif (temp_atr == "VAL"):
VAL = float(temp_line[6:])
elif (temp_atr == "MAG"):
MAG = bool(temp_line)
if (MAG == True):
magic_filename = armor_file.name[:-4] + ".mag.txt"
print (magic_filename)
mag_file = open(magic_filename)
TMAG = Magic()
for mag_line in mag_file.readlines():
print (mag_line)
elif (temp_atr == "SOK"):
SOK = bool(temp_line)
elif (temp_atr == "NSK"):
NSK = float(temp_line[6:])
elif (SOK == True):
GEM = [] * NSK
leather_armor = Armor()TEXT FILE #1 - leatherarmor.txt
ARM = 15
DUR = 75.00
DEX = -5
LVL = 3
STA = 0.94
WEI = 12.5
VAL = 121.43
MAG = True
TEXT FILE #2 - leatherarmor.mag.txt
FROS = 0.0
FIRE = 0.0
POIS = 0.0
STOR = 0.0
WATE = 0.0
EART = 0.0
DARK = 0.0
LIGH = 0.0
MADN = 0.0
VOID = 0.0