complete this code in python for me please class Matrix:

def $\_\_$init$\_\_($self$,$ name, data$)$:

self.name $=$ name

self.data $=$ data

self.row $=$ len$($data$)$

if self.row $==0$:

self.col $=0$

else:

self.col $=$ len$($data$[0])$

def $\_\_$str$\_\_($self$)$:

# return the string to be printed. It should be formatted correctly

s $="$

$"+$ self.name $+"=$

$"$

if self.data $==[]$:

return s$+\text{'}[]$

$\text{'}$

for i in range$($self$.$row$)$:

for j in range$($self$.$col$)$:

s $+=$ str$($self$.$data$[$i$][$j$])+""$

s $+="$

$"$

return s

if $\_\_$name$\_\_==\text{'}\_\_$main$\_\_\text{'}$:

#you can write your test code here

pass