Python array counter -

the assignment

write function collect_sims(nsim,n,d,p=0.5,nmax=10000) runs run_sim function nsim times (with parameters n, d, p) , returns numpy array of length nmax giving number of times simulation took specified number of steps stop.

for example, suppose nsim 8 , successive runs of run_sim gave 3,4,4,3,6,5,4,4.
tabulate “two 3s, 4 4s, 1 5, 1 6, 0 7s, 0 8s …”

the function function calls

def run_sim(n=20, d=6, p=0.5, itmax=5000):  counter = n sum = 0 = 0  while counter != 0:      if i>itmax:         raise runtimeerror      c = np.random.randint(1,d+1,1)[0] # method returns array 1 value     coin = np.random.binomial(1,p,1)[0] # if =1 heads, =0 tails     print(i,"|",c,"|",counter)      if coin ==1:         if (counter + c)>n:             i+=1         else:             i=+0             counter = counter +c     elif coin ==0:         print("coint == 0: counter - c:", counter - c)         if(counter - c)<0:             i+=1         else:             i+=1             counter = counter -c             print("coint ==0: counter:", counter)         if counter==0:             break return(i)  print(run_sim(n=20, d=6, p=0.5,itmax=500))  print(run_sim(n=20, d=12, p=0.5, itmax=500)) 

i wrote:

def collect_sims(nsim, n, d, p=0.5, nmax=10000):     run_sim(n=n, d=d, p=0.5, itmax=5000)     a=np.zeros(nmax)     a.reshape(nsim,2)     in range (nsim):         a[run_sim(n,d,p),2] += 1     return(a) 

it isn't giving me error isn't returning or printing when run it, doing wrong?