Not my type

[Al Hart]

Hi folks, if you'll pardon the corny title, I am brand new to web2py (so excited to discover it) and I'm just working may way through the book. In Chapter two, the section on types, I tried to run the examples, but I got error messages. Googling around it seemed to work better if I went one of two ways:

1. a = 3
   type(a)
2. a = 4 
   print(type(a))

I'm on Ubuntu 18.04. Not sure if the example is based on python 3? If not, is this the best way to suggest updates to the book or should we just try a pull request? 

[Joe Barnhart]

Hi Al --

First off, welcome to the web2py group.  Next, it's not clear from your message just what the question is.  If you can elaborate on (a) what you did, (b) what you expected, and (c) what you got, I'm sure someone here can help

Warm regards,

Joe B.

[notyour mitch]

Hi Joe,

Thanks so much for responding. Let me be more specific. I was referring to a section in the book, chapter two, on types.
In there it suggests

>>> a = 3
>>> print type(a)
<type 'int'>

But that didn't work for me, I got error messages (don't recall what they were at this moment).

However, when I tried it using two other methods...

1.

>>> a = 3 

>>> type(a)

or

2.

>>> a = 3 

>>> print(type(a))

Both of those worked for me. Kind of weird because when I checked which version of python I had running  it said 2.7 but perhaps I installed w2p with python3.

Anyway, at the end I was suggesting that maybe we could update the book some making reference to how things might look with python3. I wasn't sure if that sort of thing is just done here, by mentioning it in the forum and someone will get to it, or if it might be done by pull request.

Best,

Al

--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
---
You received this message because you are subscribed to a topic in the Google Groups "web2py-users" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/web2py/VityJ20AV2M/unsubscribe.
To unsubscribe from this group and all its topics, send an email to web2py+un...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Joe Barnhart]

I suspect you were actually running Python 3.x in which case "print xxx" doesn't work because print has been mad into a function (requiring parentheses).  When I start each on my Mac, this is the display I get:

Python 2.7:

ssmain:~ jbarnhart$ python

Python 2.7.10 (default, Feb 22 2019, 21:17:52)

[GCC 4.2.1 Compatible Apple LLVM 10.0.1 (clang-1001.0.37.14)] on darwin

Type "help", "copyright", "credits" or "license" for more information.

>>> 

Python 3.7:

ssmain:~ jbarnhart$

ssmain:~ jbarnhart$ python3

Python 3.7.2 (default, Feb 12 2019, 08:15:36)

[Clang 10.0.0 (clang-1000.11.45.5)] on darwin

Type "help", "copyright", "credits" or "license" for more information.

>>>

You should be able to tell the version by the startup message.  If you are actually running Python 2 and the code fails, copy and paste the actual error message you get and we'll puzzle it out.

Warm regards,

Joe

On Friday, March 29, 2019 at 7:32:52 AM UTC-7, Al Hart wrote:

Hi Joe,

Thanks so much for responding. Let me be more specific. I was referring to a section in the book, chapter two, on types.
In there it suggests

>>> a = 3
>>> print type(a)
<type 'int'>

But that didn't work for me, I got error messages (don't recall what they were at this moment).

However, when I tried it using two other methods...

1.

>>> a = 3 

>>> type(a)

or

2.

>>> a = 3 

>>> print(type(a))

Both of those worked for me. Kind of weird because when I checked which version of python I had running  it said 2.7 but perhaps I installed w2p with python3.

Anyway, at the end I was suggesting that maybe we could update the book some making reference to how things might look with python3. I wasn't sure if that sort of thing is just done here, by mentioning it in the forum and someone will get to it, or if it might be done by pull request.

Best,

Al

On Thu, Mar 28, 2019 at 9:30 PM Joe Barnhart <joe.b...@gmail.com> wrote:

Hi Al --

First off, welcome to the web2py group.  Next, it's not clear from your message just what the question is.  If you can elaborate on (a) what you did, (b) what you expected, and (c) what you got, I'm sure someone here can help

Warm regards,

Joe B.

On Thursday, March 28, 2019 at 2:10:50 AM UTC-7, Al Hart wrote:

Hi folks, if you'll pardon the corny title, I am brand new to web2py (so excited to discover it) and I'm just working may way through the book. In Chapter two, the section on types, I tried to run the examples, but I got error messages. Googling around it seemed to work better if I went one of two ways:

1. a = 3
   type(a)
2. a = 4 
   print(type(a))

I'm on Ubuntu 18.04. Not sure if the example is based on python 3? If not, is this the best way to suggest updates to the book or should we just try a pull request? 

--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
---
You received this message because you are subscribed to a topic in the Google Groups "web2py-users" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/web2py/VityJ20AV2M/unsubscribe.

To unsubscribe from this group and all its topics, send an email to web...@googlegroups.com.

[Al Hart]

Hi Joe (sorry for delay, I took the weekend off),

Yes, you're absolutely right, it's a Python version thing. I started my session in Python 3.x and so the examples in the web2py book weren't working as it seems they're based off Python 2.x 

(I was getting: 

SyntaxError: invalid syntax. 

My question is how to update the book so that super noobs like me won't trip over the same thing. It would just need a line mentioning that in Python 3, you'd have to do it 'X' way (and how to check which version you're using). Or something like that. Would we try a pull request to try an update or just mention in this space and someone will attend to it?