Python basics printing 1 to 100

Question

def gukan count       while count  100        print count        count count 1  gukan 0    My question is  When I try to increment by 3 or 9 instead of 1 in count count 1 I get an infinite loop - why is that

User · Answer

The answers here have pointed out that because after incrementing count it doesn't equal exactly 100, then it keeps going as the criteria isn't met (it's likely you want < to say less than 100).

I'll just add that you should really be looking at Python's builtin range function which generates a sequence of integers from a starting value, up to (but not including) another value, and an optional step - so you can adjust from adding 1 or 3 or 9 at a time...

0-100 (but not including 100, defaults starting from 0 and stepping by 1):

for number in range(100):
    print(number)

0-100 (but not including and makes sure number doesn't go above 100) in steps of 3:

for number in range(0, 100, 3):
    print(number)

User · Answer

because if you change your code with  def gukan count       while count  100        print count        count count 3  gukan 0    count reaches 99 and then  at the next iteration 102   So  count    100   never evaluates true and the loop continues forever  If you want to count up to 100 you may use  def gukan count       while count  lt   100        print count        count count 3  gukan 0    or  if you want 100 always printed   def gukan count       while count  lt   100        print count        count count 3        if count  gt  100            count   100 gukan 0

User · Answer

x 1 while x lt  100      print x      x x 3

User · Answer

Your count never equals the value 100 so your loop will continue until that is true   Replace your while clause with   def gukan count       while count  lt  100        print count        count count 3  gukan 0    and this will fix your problem  the program is executing correctly given the conditions you have given it

User · Answer

The first line defines the variable  The second line loops it to 100  the third adds 1 to a and the 4th divides a by 3 and if there is no remainder  0  it will print that number otherwise it will print a blank line    a    0   for i in range 0 100        a   a   1 if a   3    0      print a  else      print

User · Answer

When you change count   count   1 to count   count   3 or count   count   9  count will never be equal to 100  At the very best it ll be 99  That s not enough   What you ve got here is the classic case of infinite loop  count is never equal to 100  sure  at some point it ll be greater than 100  but your while loop doesn t check for this condition  and the while loop goes on and on   What you want is probably   while count  lt  100    Or  lt    if you feel like printing a hundred    Not   while count    0     Spaces around     Makes Guido van Rossum happy    Now the loop will terminate when count  gt   100   Take a look at Python documentation

User · Answer

When you use count   count   3 or count   count   9 instead of count   count   1  the value of count will never be 100  and hence it enters an infinite loop   You could use the following code for your condition to work  while count  lt  100    Now the loop will terminate when count    100

User · Answer

consider the following   def gukan count       while count  lt  100        print count        count count 3  gukan 0   prints      93  96  99   def gukan count       while count  lt  100        print count        count count 9  gukan 0    prints      81  90  99   you should use count  lt  100 because count will never reach the exact number 100 if you use 3 or 9 as the increment  thus creating an infinite loop   Good luck

User · Answer

Because the condition is never true  i e  count   100 never executes when you put count count 3 or count  count 9  try this out  while count lt 100

User · Answer

I would guess it makes an infinite loop bc you skip the number 100  If you set the critera to be less than 101 it should do the trick    def gukan count       while count lt 100        print count        count count 3  gukan 0

[python] Python basics printing 1 to 100

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