按行和列访问2D列表中的特定元素

Question

好的，所以对于我的一个作业，我需要打印出2D列表第二行中的第三个元素。下面提供了代码

# Get our list from the command line arguments
import sys
list2d= sys.argv[1:]

# Convert the command line arguments into 2d list
for i in range(0,len(list2d)):  
  list2d[i]= list2d[i].split(',')

# Write your code below

r = 0  
c = 0

for row in list2d:  
  for element in row:  
    r = element[1];  
for col in list2d:  
  for element in column:  
    c = element[2];  

print(element[r, c])