primenumbers.py

import random

#Generate  a  list  of  10  random  numbers  between  0  and  100.  
randoms=[]
for i in range (10):
    randoms.append(random.randrange(1,101,1))
print(randoms)
#Get  them  in order  from  largest  to  smallest,
randoms.sort()
print(randoms)
#removing  numbers  divisible  by  3.
for i in randoms:
	if i % 3 == 0:
		randoms.remove(i)
print(randoms)




#generate a list of random prime numbers from 1 through 100
randoms=[]
for i in range (10):
    randoms.append(random.randrange(1,101,1))
print(randoms)
for i in randoms:
	if i % 2 == 0:
		randoms.remove(i)
	elif i % 3 == 0:
		randoms.remove(i)
	elif i % 5 == 0:
		randoms.remove(i)
	elif i % 7 == 0:
		randoms.remove(i)
print(randoms)




#Generate  a  random  list  with  its  items  being  integer  from  1  to  30
#the  list  should  be  30  items  long.
randoms =[]
for i in range (30):
    randoms.append(random.randrange(1,31,1))
print(randoms)
#then  print  only  those  values  whose  digit  sum  equals  5.
for i in randoms:
	if int(str(numbers[i])[:1]) + int(str(numbers[i])[1:2]) != 5:
		randoms.remove(i)
print(randoms)




#Create  a  list  of  100  randomly  generated  3-digit  numbers.
numbers = []
first = [x for x in range 5]
for i in range(10):
	numbers.append(random.randrange(100,1000,1))
print(numbers)
#Find  a  way  to  extract  only  the  first  digit  from  each  number,
for i in numbers:
	first[i] = str(numbers[i])[:1]
#and  then  arrange  the  resulting  list  in  ascending  order
first.sort()
print(first)