Answer to Question #249843 in Python for majorviktour

Question

Create a program that reads integers from the user until a blank line is entered. Once

all of the integers have been read your program should display all of the negative

numbers, followed by all of the zeros, followed by all of the positive numbers.Within

each group the numbers should be displayed in the same order that they were entered by the user. For example, if the user enters the values 3, -4, 1, 0, -1, 0, and -2 then

your program should output the values -4, -1, -2, 0, 0, 3, and 1.display each value on its own line.

Answer 1

# Create three lists to store the negative, zero and positive values
negatives   = []
zeros  = []
positives   = []

# Read all of the integers from the user, 
# storing each integer in the correct list
line = input ("Enter an integer(blank to quit):")
while line   !=  "":
   num = int (line)
   if  num   <  0:
      negatives.append(num)
   elif num   >  0:
      positives.append(num)
   else :
      zeros.append(num)

   # Read the next line of input from the user
   line = input ("Enter an integer(blank to quit):")

# Display all of the negative values, 
# then all of the zeros, then all of the positive values
print ("The numbers were:")
for   n  in  negatives:
   print (n)
for   n  in  zeros:
   print (n)
for   n  in  positives:
   print (n)