On 9 avr, 15:32, thomasancill...@gmail.com wrote:
> I'm new to learning python and creating a basic program to convert units of
> measurement which I will eventually expand upon but im trying to figure out
> how to loop the entire program. When I insert a while loop it only loops the
> first 2 lines. Can someone provide a detailed beginner friendly explanation.
> Here is my program.
>
> #!/usr/bin/env python
> restart = "true"
> while restart == "true":
> #Program starts here
> print "To start the Unit Converter please type the number next to the
> conversion you would like to perform"
> choice = input("\n1:Inches to Meter\n2:Millileters to Pint\n3:Acres to
> Square-Miles\n")
>
> #If user enters 1:Program converts inches to meters
> if choice == 1:
> number = int(raw_input("\n\nType the amount in Inches you would like
> to convert to Meters.\n"))
> operation = "Inches to Meters"
> calc = round(number * .0254, 2)
> print "\n",number,"Inches =",calc,"Meters"
> restart = raw_input("If you would like to perform another conversion
> type: true\n"
>
> #If user enters 2:Program converts millimeters to pints
> elif choice == 2:
> number = int(raw_input("\n\nType the amount in Milliliters you would
> like to convert to Pints.\n"))
> operation = "Milliliters to Pints"
> calc = round(number * 0.0021134,2)
> print "\n",number,"Milliliters =",calc,"Pints"
> restart = raw_input("If you would like to perform another conversion
> type: true\n")
>
> #If user enter 3:Program converts kilometers to miles
> elif choice == 3:
> number = int(raw_input("\n\nType the amount in Kilometers you would
> like to convert to Miles.\n"))
> operation = "Kilometers to Miles"
> calc = round(number * 0.62137,2)
> print "\n",number,"Kilometers =",calc,"Miles"
> restart = raw_input("If you would like to perform another conversion
> type: true\n")
-----
More (very) important:
meter: lower case "m"
kilometre: lower case "k"
milli: lower case "m"
http://www.bipm.org/en/home/
Less important:
Start with something simple and increase the complexity eg:
>>> # Py 3.2
>>> while True:
... s = input('km: ')
... if s == 'q':
... break
... a = float(s)
... print('{} [kilometre] == {} [metre]'.format(a, a * 1000))
...
km: 1
1.0 [kilometre] == 1000.0 [metre]
km: 1.3456
1.3456 [kilometre] == 1345.6 [metre]
km: q
jmf
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