Multiline comments in Python doesn't compile

[sterfield]

OS : Debian testing
Lighttable version : 0.6.2 (64 bit) (binary version 0.8.4)
Python version : 2.7.6

How to reproduce :

• create a new file "test.py" and open it in LighTable
• create a multiline comment

'''  
This  
is a  
multiline  
comment  
'''

• execute the file (CTRL + SHIFT + ENTER)

Current results : Stacktrace saying "SyntaxError: EOF while scanning triple-quoted string literal"

Expected results : normal compilation.

Note on Python comments:

• The "standard" comment used in Python is the '#' character (http://docs.python.org/2/reference/lexical_analysis.html?highlight=comment#comments)
• However, multiline comments using triple quotes works in a Python interpreter. Moreover, this usage is validated by Guido van Rossum in a tweet. (https://twitter.com/gvanrossum/status/112670605505077248)

Thanks !

EDIT :
Change the code block to correctly displayed the line break.
Change the shortcut to execute the file to CTRL + SHIFT + ENTER

[bilderbuchi]

Ctrl-Shift-Space doesn't do anything for me, maybe you meant Ctrl-Shift-Enter? Also, your "multi-line-comment" is not really multiline, maybe you meant this:

'''
This is a multiline comment 
''' 

Aside of that, I can reproduce this. Same comment in Ipython 1.1.0 (python 2.7.5) works:

In [1]: '''
   ...: This is a comment
   ...: '''
Out[1]: '\nThis is a comment\n'

[sterfield]

You are right, for both of your comments.

The multiline code I've put in my issue was already with line break at every words, but it wasn't displayed correctly (due to the proximity of the bullet point).It's fixed now.

I've also change the shortcut, it's indeed CTRL + SHIFT + ENTER to execute the whole file.

Thanks,

[bilderbuchi]

FWIW, this also happens with triple-quotes using ". It's pretty annoying when you use code containing python docstrings

@ibdknox any idea what's going wrong here?

[ibdknox]

Not sure, we just delegate to python's ast tools, compile, and eval: https://github.com/LightTable/Python/blob/master/py-src/ltmain.py#L103

[sterfield]

Did some quick test.
I've create a small file, using this :

import ast

string="""'''
This is a multiline comment 
'''"""

print string

a = ast.parse(string)
print a

And it's compiling normally, in Python CLI and in LightTable.

But as soon as I put the same comment directly in the source code, as this :

import ast


'''
This is a multiline comment 
'''

string="""'''
This is a multiline comment 
'''"""

print string

a = ast.parse(string)
print a

The execution in Python CLI is OK, but I've got the same stack trace in LightTable.

Thanks,

[antibios]

Same issue on Light table 0.6.5
We use docstrings in most procedures, so this makes it difficult to use light table's best feature.

[stleon]

The same problem in Light Table 0.6.6

[gnbl]

Still present in "Light Table version 0.7.2, Binary version 0.8.4" w/ "Python 3.4.2 (v3.4.2:ab2c023a9432, Oct 6 2014, 22:15:05) [MSC v.1600 32 bit (Intel)] on win32"

[ufechner7]

Could someone add the label "Python"? This would make it more visible.

[kenny-evitt]

I created LightTable/Python#40 to replace this.