#$!/$usr$/$bin$/$env pythonimport matplotlib.pyplot as pltimport sysfrom optparse import OptionParserimport randomimport mathbounds$\_$values $=$ range$(0,4097,100)$valid$\_$fractions $=[]$for bound in bounds$\_$values: # Run relocation.py with bound value and capture valid fraction # Here we assume capture$\_$fraction is a function that runs relocation.py and returns the valid fraction fraction $=$ capture$\_$fraction$($bound$)$ valid$\_$fractions.append$($fraction$)$plt$.$plot$($bounds$\_$values, valid$\_$fractions$)$plt$.$xlabel$(\text{'}$Bounds Register Value'$)$plt$.$ylabel$(\text{'}$Fraction of Valid Addresses'$)$plt$.$title$(\text{'}$Fraction of Valid Virtual Addresses vs Bounds Register Value'$)$plt$.$show$()$def convert$($size$)$: length $=$ len$($size$)$ lastchar $=$ size$[$length$-1]$ if $($lastchar $==\text{'}$k$\text{'})$ or $($lastchar $==\text{'}$K$\text{'})$: m $=1024$ nsize $=$ int$($size$[0$:length$-1])*$ m elif $($lastchar $==\text{'}$m$\text{'})$ or $($lastchar $==\text{'}$M$\text{'})$: m $=1024*1024$ nsize $=$ int$($size$[0$:length$-1])*$ m elif $($lastchar $==\text{'}$g$\text{'})$ or $($lastchar $==\text{'}$G$\text{'})$: m $=1024*1024*1024$ nsize $=$ int$($size$[0$:length$-1])*$ m else: nsize $=$ int$($size$)$ return nsize# main programparser $=$ OptionParser$()$parser$.$add$\_$option$(\text{'}-$s$\text{'},\text{'}--$seed', default$=0,$ help$=$'the random seed', action$=$'store', type$=$'int', dest$=$'seed'$)$parser$.$add$\_$option$(\text{'}-$a$\text{'},\text{'}--$asize', default$=\text{'}1$k$\text{'},$ help$=$'address space size $($e$.$g$.,16,64$k$,32$m$,1$g$)\text{'},$ action$=$'store', type$=$'string', dest$=$'asize'$)$parser$.$add$\_$option$(\text{'}-$p$\text{'},\text{'}--$physmem', default$=\text{'}16$k$\text{'},$ help$=$'physical memory size $($e$.$g$.,16,64$k$,32$m$,1$g$)\text{'},$ action$=$'store', type$=$'string', dest$=$'psize'$)$parser$.$add$\_$option$(\text{'}-$n$\text{'},\text{'}--$addresses', default$=5,$ help$=$'number of virtual addresses to generate', action$=$'store', type$=$'int', dest$=$'num'$)$parser$.$add$\_$option$(\text{'}-$b$\text{'},\text{'}--$b$\text{'},$ default$=\text{'}-1\text{'},$ help$=$'value of base register', action$=$'store', type$=$'string', dest$=$'base'$)$parser$.$add$\_$option$(\text{'}-$l$\text{'},\text{'}--$l$\text{'},$ default$=\text{'}-1\text{'},$ help$=$'value of limit register', action$=$'store', type$=$'string', dest$=$'limit'$)$parser$.$add$\_$option$(\text{'}-$c$\text{'},\text{'}--$compute', default$=$False, help$=$'compute answers for me$\text{'},$ action$=$'store$\_$true', dest$=$'solve'$)($options$,$ args$)=$ parser.parse$\_$args$()$random$.$seed$($options$.$seed$)$asize $=$ convert$($options$.$asize$)$psize $=$ convert$($options$.$psize$)$if psize $<=1$: print$(\text{'}$Error: must specify a non$-$zero physical memory size.$\text{'})$ exit$(1)$if asize $==0$: print$(\text{'}$Error: must specify a non$-$zero address$-$space size.$\text{'})$ exit$(1)$if psize $<=$ asize: print$(\text{'}$Error: physical memory size must be GREATER than address space size $($for this simulation$)\text{'})$ exit$(1)$limit $=$ convert$($options$.$limit$)$base $=$ convert$($options$.$base$)$if limit $==-1$: limit $=$ int$($asize $/4\mathrm{.}0+($asize $/4\mathrm{.}0*$ random.random$()))$if base $==-1$: done $=0$ while done $==0$: base $=$ int$($psize $*$ random.random$())$ if $($base $+$ limit$)<$ psize: done $=1$valid$\_$count $=0$for i in range$(0,$ options.num$)$: vaddr $=$ int$($asize $*$ random.random$())$ if vaddr $<$ limit: valid$\_$count $+=1$fraction$\_$valid $=$ valid$\_$count $/$ options.numprint$($f$\text{'}$Seed: $\{$options$.$seed$\},$ Limit: $\{$limit$\},$ Fraction of valid addresses: $\{$fraction$\_$valid:$\mathrm{.}2$f$\}\text{'})$

Getting errors in the code please help