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Getting started with IDLE and Python - no highlighting and no execution

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  Getting started with IDLE and Python - no highlighting and no execution PeterSo <ojlise@gmail.com> - 2012-08-05 16:46 -0700
    Re: Getting started with IDLE and Python - no highlighting and no execution Rotwang <sg552@hotmail.co.uk> - 2012-08-06 01:09 +0100
      Re: Getting started with IDLE and Python - no highlighting and no execution MRAB <python@mrabarnett.plus.com> - 2012-08-06 01:58 +0100
      Re: Getting started with IDLE and Python - no highlighting and no execution Matthew Barnett <mrabarnett@mrabarnett.plus.com> - 2012-08-06 02:01 +0100
        Re: Getting started with IDLE and Python - no highlighting and no execution Rotwang <sg552@hotmail.co.uk> - 2012-08-06 02:13 +0100
      Re: Getting started with IDLE and Python - no highlighting and no execution PeterSo <ojlise@gmail.com> - 2012-08-05 19:17 -0700
    Re: Getting started with IDLE and Python - no highlighting and no execution Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-06 01:52 +0100
    Re: Getting started with IDLE and Python - no highlighting and no execution Terry Reedy <tjreedy@udel.edu> - 2012-08-05 21:32 -0400
    Re: Getting started with IDLE and Python - no highlighting and no execution soloflyr@gmail.com - 2012-08-09 06:36 -0700

#26585 — Getting started with IDLE and Python - no highlighting and no execution

I am just starting to learn Python, and I like to use the editor
instead of the interactive shell. So I wrote the following little
program in IDLE

# calculating the mean

data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]

def mean(data):
	return sum(data)/len(data)

mean(data1)


There is no syntax highlighting and when I ran it F5, I got the
following in the shell window.


 >>> ================================ RESTART
================================
>>>
>>>


Any ideas?
If I added print mean(data1), it gave me a invalid syntax

# calculating the mean

data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
data2=[1,2,3,4,5]

def mean(data):
	return sum(data)/len(data)

mean(data1)
print mean(data1)

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#26586

On 06/08/2012 00:46, PeterSo wrote:
> I am just starting to learn Python, and I like to use the editor
> instead of the interactive shell. So I wrote the following little
> program in IDLE
>
> # calculating the mean
>
> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
>
> def mean(data):
> 	return sum(data)/len(data)
>
> mean(data1)
>
>
> There is no syntax highlighting and when I ran it F5, I got the
> following in the shell window.
>
>
>   >>> ================================ RESTART
> ================================
>>>>
>>>>
>
>
> Any ideas?

I don't know what editor you're using or how it works, but I'm guessing 
that pressing f5 runs what you've written as a script, right? In that 
case the interpreter doesn't automatically print the result of 
expressions in the same way that the interactive interpreter does; you 
didn't tell it to print anything, so it didn't.


> If I added print mean(data1), it gave me a invalid syntax
>
> # calculating the mean
>
> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
> data2=[1,2,3,4,5]
>
> def mean(data):
> 	return sum(data)/len(data)
>
> mean(data1)
> print mean(data1)

If you're using Python 3.x, you'll need to replace

print mean(data1)

with

print(mean(data1))

since the print statement has been replaced with the print function in 
Python 3.

If you're instead using Python 2.x then I don't know what the problem 
is, but in that case your mean() function won't work properly - the 
forward slash operator between a pair of ints gives you floor division 
by default, so you should instead have it return something like 
float(sum(data))/len(data).


-- 
I have made a thing that superficially resembles music:

http://soundcloud.com/eroneity/we-berated-our-own-crapiness

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#26594

On 06/08/2012 01:09, Rotwang wrote:
> On 06/08/2012 00:46, PeterSo wrote:
>> I am just starting to learn Python, and I like to use the editor
>> instead of the interactive shell. So I wrote the following little
>> program in IDLE
>>
>> # calculating the mean
>>
>> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
>>
>> def mean(data):
>> 	return sum(data)/len(data)
>>
>> mean(data1)
>>
>>
>> There is no syntax highlighting and when I ran it F5, I got the
>> following in the shell window.
>>
>>
>>   >>> ================================ RESTART
>> ================================
>>>>>
>>>>>
>>
>>
>> Any ideas?
>
> I don't know what editor you're using or how it works, but I'm guessing
> that pressing f5 runs what you've written as a script, right? In that
> case the interpreter doesn't automatically print the result of
> expressions in the same way that the interactive interpreter does; you
> didn't tell it to print anything, so it didn't.
>
It looks like it's IDLE.
>
>> If I added print mean(data1), it gave me a invalid syntax
>>
Which suggests to me that it's Python 3.

>> # calculating the mean
>>
>> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
>> data2=[1,2,3,4,5]
>>
>> def mean(data):
>> 	return sum(data)/len(data)
>>
>> mean(data1)
>> print mean(data1)
>
> If you're using Python 3.x, you'll need to replace
>
> print mean(data1)
>
> with
>
> print(mean(data1))
>
> since the print statement has been replaced with the print function in
> Python 3.
>
> If you're instead using Python 2.x then I don't know what the problem
> is, but in that case your mean() function won't work properly - the
> forward slash operator between a pair of ints gives you floor division
> by default, so you should instead have it return something like
> float(sum(data))/len(data).
>

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#26596

On 06/08/2012 01:58, MRAB wrote:
> On 06/08/2012 01:09, Rotwang wrote:
>> On 06/08/2012 00:46, PeterSo wrote:
>>> I am just starting to learn Python, and I like to use the editor
>>> instead of the interactive shell. So I wrote the following little
>>> program in IDLE
>>>
>>> # calculating the mean
>>>
>>> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
>>>
>>> def mean(data):
>>> 	return sum(data)/len(data)
>>>
>>> mean(data1)
>>>
>>>
>>> There is no syntax highlighting and when I ran it F5, I got the
>>> following in the shell window.
>>>
>>>
>>>   >>> ================================ RESTART
>>> ================================
>>>>>>
>>>>>>
>>>
>>>
>>> Any ideas?
>>
>> I don't know what editor you're using or how it works, but I'm guessing
>> that pressing f5 runs what you've written as a script, right? In that
>> case the interpreter doesn't automatically print the result of
>> expressions in the same way that the interactive interpreter does; you
>> didn't tell it to print anything, so it didn't.
>>
> It looks like it's IDLE.

Actually, he does say that it's IDLE at the start.
[snip]

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#26597

On 06/08/2012 02:01, Matthew Barnett wrote:
> On 06/08/2012 01:58, MRAB wrote:
>> On 06/08/2012 01:09, Rotwang wrote:
>>> On 06/08/2012 00:46, PeterSo wrote:
>>>> I am just starting to learn Python, and I like to use the editor
>>>> instead of the interactive shell. So I wrote the following little
>>>> program in IDLE
>>>>
>>>> [...]
>>>>
>>> I don't know what editor you're using or how it works, but I'm guessing
>>> that pressing f5 runs what you've written as a script, right? In that
>>> case the interpreter doesn't automatically print the result of
>>> expressions in the same way that the interactive interpreter does; you
>>> didn't tell it to print anything, so it didn't.
>>>
>> It looks like it's IDLE.
>
> Actually, he does say that it's IDLE at the start.
> [snip]

Doh! Not sure how I missed that, sorry.

-- 
I have made a thing that superficially resembles music:

http://soundcloud.com/eroneity/we-berated-our-own-crapiness

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#26602

On Aug 5, 7:09 pm, Rotwang <sg...@hotmail.co.uk> wrote:
> On 06/08/2012 00:46, PeterSo wrote:
>
>
>
>
>
>
>
>
>
> > I am just starting to learn Python, and I like to use the editor
> > instead of the interactive shell. So I wrote the following little
> > program in IDLE
>
> > # calculating the mean
>
> > data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
>
> > def mean(data):
> >    return sum(data)/len(data)
>
> > mean(data1)
>
> > There is no syntax highlighting and when I ran it F5, I got the
> > following in the shell window.
>
> >   >>> ================================ RESTART
> > ================================
>
> > Any ideas?
>
> I don't know what editor you're using or how it works, but I'm guessing
> that pressing f5 runs what you've written as a script, right? In that
> case the interpreter doesn't automatically print the result of
> expressions in the same way that the interactive interpreter does; you
> didn't tell it to print anything, so it didn't.
>
> > If I added print mean(data1), it gave me a invalid syntax
>
> > # calculating the mean
>
> > data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
> > data2=[1,2,3,4,5]
>
> > def mean(data):
> >    return sum(data)/len(data)
>
> > mean(data1)
> > print mean(data1)
>
> If you're using Python 3.x, you'll need to replace
>
> print mean(data1)
>
> with
>
> print(mean(data1))
>
> since the print statement has been replaced with the print function in
> Python 3.
>
> If you're instead using Python 2.x then I don't know what the problem
> is, but in that case your mean() function won't work properly - the
> forward slash operator between a pair of ints gives you floor division
> by default, so you should instead have it return something like
> float(sum(data))/len(data).
>
> --
> I have made a thing that superficially resembles music:
>
> http://soundcloud.com/eroneity/we-berated-our-own-crapiness

Your right, it is v 3 so print(mean(data1)) worked.
Thanks.
I still do not have any highlighting in the IDLE editor.

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#26592

On 06/08/2012 00:46, PeterSo wrote:
> I am just starting to learn Python, and I like to use the editor
> instead of the interactive shell. So I wrote the following little
> program in IDLE
>

[snip]

I can't comment on IDLE as I've never used it, but you're doing yourself 
a big disservice if you don't use the interactive shell.  Trying code 
snippets at the interactive prompt is one of the big benefits of using 
Python, ignore it at your peril :)

-- 
Cheers.

Mark Lawrence.

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#26601

On 8/5/2012 7:46 PM, PeterSo wrote:
> I am just starting to learn Python, and I like to use the editor
> instead of the interactive shell. So I wrote the following little
> program in IDLE
>
> # calculating the mean
>
> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
>
> def mean(data):
> 	return sum(data)/len(data)
>
> mean(data1)
>
>
> There is no syntax highlighting

If properly installed and working, IDLE does syntax highliting if and 
only if you name the file with a .py, .pyw, .pyo extension. I have a 
'play around' directory with a tem.py file that is always in the recent 
files lists. I use it for short shippets that are two long to directly 
type into the shell.

-- 
Terry Jan Reedy

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#26786

On Sunday, August 5, 2012 7:46:54 PM UTC-4, PeterSo wrote:
> I am just starting to learn Python, and I like to use the editor
> 
> instead of the interactive shell. So I wrote the following little
> 
> program in IDLE
> 
> 
> 
> # calculating the mean
> 
> 
> 
> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
> 
> 
> 
> def mean(data):
> 
> 	return sum(data)/len(data)
> 
> 
> 
> mean(data1)
> 
> 
> 
> 
> 
> There is no syntax highlighting and when I ran it F5, I got the
> 
> following in the shell window.
> 
> 
> 
> 
> 
>  >>> ================================ RESTART
> 
> ================================
> 
> >>>
> 
> >>>
> 
> 
> 
> 
> 
> Any ideas?
> 
> If I added print mean(data1), it gave me a invalid syntax
> 
> 
> 
> # calculating the mean
> 
> 
> 
> data1=[49, 66, 24, 98, 37, 64, 98, 27, 56, 93, 68, 78, 22, 25, 11]
> 
> data2=[1,2,3,4,5]
> 
> 
> 
> def mean(data):
> 
> 	return sum(data)/len(data)
> 
> 
> 
> mean(data1)
> 
> print mean(data1)

did you call you file xxx.py  IDLE looks for the .py extension to identify the program as python code.

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