Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

, June 15, 2017 1:53 AM To: William Gan <ganwill...@outlook.com>; tutor@python.org Subject: Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm Hi William, Glad to see the tutor list is being of help in your learning. On 14/06/17 09:20, William Gan wrote: >

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

...@graniteweb.com] Sent: Thursday, June 15, 2017 2:04 AM To: tutor@python.org Subject: Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm > On Jun 14, 2017, at 09:20, William Gan <ganwill...@outlook.com> wrote: > > However, today I modified

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

] Sent: Thursday, June 15, 2017 2:15 AM To: tutor@python.org Subject: Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm On 14/06/17 15:20, William Gan wrote: > print('Enter C for Celsius to Fahrenheit or F for Fahrenheit to > Celsius.') > > if unit

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

> On Jun 15, 2017, at 13:16, William Gan wrote: > > Hi David, > > Very much thanks for taking time to help. > > Your explanation has helped me understand that syntax issue better. I have > resolved that error. > > Your counsel on the second issue has given me

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

On Thu, Jun 15, 2017 at 12:52:10PM +, Neil Cerutti wrote: On 2017-06-14, Peter Otten <__pete...@web.de> wrote: Sebastian Silva wrote: Or shorter: if unit in 'Cc': Don't do that. You are in for nasty surprises: def check(unit): ... if unit in "Cc": ... return "Celsius"

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

On 2017-06-14, Peter Otten <__pete...@web.de> wrote: > Sebastian Silva wrote: > >> Or shorter: >> >> if unit in 'Cc': > > Don't do that. You are in for nasty surprises: > def check(unit): > ... if unit in "Cc": > ... return "Celsius" > ... return "unknown" > ...

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

On 2017-06-14 12:22, Mats Wichmann wrote: Of course if you do any serious argument handling, it's better to use something like optparse (and earlier argparse) module so you're not reinventing a wheel which has been massively worked on already. At the suggestion of a posting on this list some

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

On 06/14/2017 12:18 PM, Sibylle Koczian wrote: > Correct usage would be: > > if myvar == val1 or myval == val2: > or > if myvar in (val1, val2): Just piling on here to say I find the second form very useful to collect arguments in a "friendly" way, if you don't have a reason to very rigidly

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

Sebastian Silva wrote: > Or shorter: > > if unit in 'Cc': Don't do that. You are in for nasty surprises: >>> def check(unit): ... if unit in "Cc": ... return "Celsius" ... return "unknown" ... >>> check("c") 'Celsius' >>> check("C") 'Celsius' >>> check("F") 'unknown' Fine so

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

Am 14.06.2017 um 16:20 schrieb William Gan: Good day Everyone, I am seeking help on two issues. ISSUE 1: Yesterday I posted a problem on this tiny script I wrote for temperature conversion (as practice for a newbie). My error was pointed out to me that there is a difference in upper and

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

Hi William, Glad to see the tutor list is being of help in your learning. On 14/06/17 09:20, William Gan wrote: > if unit == 'C' or 'c': In this case, it will always be true, because there are two conditions, either: * unit == 'C' or * 'c' As you can see, the second condition is not a

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

On 14/06/17 15:20, William Gan wrote: > print('Enter C for Celsius to Fahrenheit or F for Fahrenheit to Celsius.') > > if unit == 'C' or 'c': You have hit a common error for beginners. reading this as a human it is quite clear what is meant but the computer sees it differently. It sees: if

Re: [Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

> On Jun 14, 2017, at 09:20, William Gan wrote: > > However, today I modified only the print instruction a little to try to print > out ℃ (in the second print clause). When I subsequently ran the script all > the outputs were executed from the if clause, even when I

[Tutor] Fahrenheit to Celsius Conversion another problem and Programming Paradigm

Good day Everyone, I am seeking help on two issues. ISSUE 1: Yesterday I posted a problem on this tiny script I wrote for temperature conversion (as practice for a newbie). My error was pointed out to me that there is a difference in upper and lowercase letters. After correcting that error, I