why does it say my array is not defined when i try and use it elseware in a calss? Python-CodePudding

class Grid:

def __init__(self, row, col, inp):
    self.row = row
    self.col = col
    self.inp = inp
    newGrid = []
    newGrid.append([[0]*col]*row)

def changeGrid(self, row, col, inp):
    newGrid #says it is not defined

Why cant changeGrid() access the variable newGrid?

CodePudding user response：

in order to access "newGrid" you need to make it an attribute of the class

try something like this

def __init__(self, row, col, inp):
    self.row = row
    self.col = col
    self.inp = inp
    self.newGrid = []
    self.newGrid.append([[0]*col]*row)

def changeGrid(self, row, col, inp):
    self.newGrid #now you should have access to it

CodePudding user response：

Because newGrid is not reachable in the scope of changeGrid. Depending on what you're trying to achieve you could either make newGrid a class member or an instance member. More detail here Python Class Members