Complete the Python code below so that the shared counter variable is properly incremented by all the created processes. What is the final value of counter?

$\backslash$begin$\{$tabular$\}\{|$c$|\}$

$\backslash$hline import multiprocessing $\backslash \backslash$

$\backslash$hline lock $\backslash (=\backslash$square $\backslash )\backslash \backslash$

$\backslash$hline class Process$($multiprocessing$.$Process$)$: $\backslash \backslash$

$\backslash$hline def$\_\_$init$\_\_($self$,$ counter$)$: $\backslash \backslash$

$\backslash$hline super$($Process$,$ self$).\_\_$init$\_\_()\backslash \backslash$

$\backslash$hline self.counter $=$ counter $\backslash \backslash$

$\backslash$hline def run$($self$)$: $\backslash \backslash$

$\backslash$hline for i in range$(50)$: $\backslash \backslash$

$\backslash$hline with $\backslash \backslash$

$\backslash$hline self.counter.value $\backslash (+=1\backslash )\backslash \backslash$

$\backslash$hline $\backslash \backslash$

$\backslash$hline def main$()$: $\backslash \backslash$

$\backslash$hline counter $=$ multiprocessing. Value$(\text{'}$i$\text{'},$ lock$=$True$)\backslash \backslash$

$\backslash$hline counter.value $\backslash (=0\backslash )\backslash \backslash$

$\backslash$hline $\backslash \backslash$

$\backslash$hline processes $\backslash (=[\backslash )$ Process $\backslash (\backslash \backslash ))$ for i in range$(10)]\backslash \backslash$

$\backslash$hline $[$p$.$start$()$ for $\backslash ($ p $\backslash )$ in processes$]\backslash \backslash$

$\backslash$hline $[$p$.$join$()$ for $\backslash ($ p $\backslash )$ in processes$]\backslash \backslash$

$\backslash$hline print$($counter$.$value$)\backslash \backslash$

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

$\backslash$hline main$()\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$