I’m trying to go through each row of my field and then each column within the row, but my field is made of None for the empty spaces that I need. My code gives a type error NoneType object is unsubscriptable, so how can I go about skipping the Nones in my field?

field = [ [['PEASH', 5], None, None, None, None, None, ['ZOMB', 15]],
          [['PEASH', 5], None, None, None, None, None, ['ZOMB', 15]],
          [None, None, None, None, None, None, None],
          [None, None, None, None, None, None, None],
          [None, None, None, None, None, None, None] ]

num_rows=len(field)
num_columns=len(field[0])

lane = 0
row_counter = -1
column_counter = -1
for row in range(num_rows):
    row_counter += 1
    print('rowcounter is at',row_counter)
    print(row)
    for column in range(num_columns): #for each column, 
        column_counter += 1

        element = field[row][column] 
        print(element) #now element will be ['peash',15]
        if element[0] == 'PEASH':
            print('yes there is a peashooter in',row_counter,column_counter)
            

>Solution :

simply change

if element[0] == 'PEASH':
    print('yes there is a peashooter in',row_counter,column_counter)

to

if element is not None:
    if element[0] == 'PEASH':
        print('yes there is a peashooter in',row_counter,column_counter)