Question

This has stumped me for several hours, and I am so close to the end, and I’ve tried several different variations, and it comes out in weird ways.

I have also found different times this problem has been asked, but none of them seem to be having the problem I seem to be having.

The question / problem:
I am having can be seen in the output below this code. The calculation is not carrying across the columns for each respective row, and the calculation keeps taking in the same values into the row and col, apparently, and keeps outputting the same value, 35.7

The code:

def WindChill():
row = 0
col = 0
i = 0
wchill = round((35.74 + 0.6215*(col) - 35.75*(row**16) + 0.4275*(col)*(row**16)), 1)

print(10 * " ", "|", end = "")

head = -1

for i in range(1):
    for col in range(-20, 70, 10):
        print(3 * " ", col, "F", 3 * " ", "|", end = " ")
    print("\n", 150 * "-")

while head < 0:
    for row in range(0, 55, 5):
        if (len(str(row))) < 2:
            print(row, "mph", 4 * " ", "|", end = " ")

        else:
            print(row, "mph", 3 * " ", "|", end = " ")

        print(3 * " ", round(wchill, 1), 3 * " ", "|", end = " ")

        col = 0
        head += 1

        print("\n", 150 * "-")
    print()

print()

This outputs:

                  |    -20 F     |     -10 F     |     0 F     |     10 F     |     20 F     |     30 F     |     40 F     |     50 F     |     60 F     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       0 mph      |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       5 mph      |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       10 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       15 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       20 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       25 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       30 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       35 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       40 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       45 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------
       50 mph     |     35.7     | 
       ------------------------------------------------------------------------------------------------------------------------------------------------------

Now, obviously, the 35.7 values are supposed to be different with each increment of 5 mph in wind speed, and it’s supposed to calculate values all across the columns for each row, too.

The table and calculations are supposed to look similar to the table at:
http://www.nws.noaa.gov/os/windchill/index.shtml

Answer 1

You have calculated wchill at the very beginning of your program, when row = 0 and col = 0. That number is evaluated to 35.7 at the beginning, and will not change.

If you want wchill to change based on what row/column you are printing on currently, then you need to call the line

wchill = round((35.74 + 0.6215*(col) - 35.75*(row**16) + 0.4275*(col)*(row**16)), 1)

right before you print it, when the values of row and column change.

edit: what I am trying to say here is that wchill isn’t magically changing by itself – you need to recalculate it every time the row/column changes.