ImportError: cannot import name '_hy_macros'

[leetschau]

During the last step of the installation of calysto_hy, an error raised:

python -m calysto_hy install
Traceback (most recent call last):
  File "/home/leo/apps/miniconda3/envs/hylang/lib/python3.6/runpy.py", line 183, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "/home/leo/apps/miniconda3/envs/hylang/lib/python3.6/runpy.py", line 142, in _get_module_details
    return _get_module_details(pkg_main_name, error)
  File "/home/leo/apps/miniconda3/envs/hylang/lib/python3.6/runpy.py", line 109, in _get_module_details
    __import__(pkg_name)
  File "/home/leo/apps/miniconda3/envs/hylang/lib/python3.6/site-packages/calysto_hy/__init__.py", line 2, in <module>
    from .kernel import CalystoHy
  File "/home/leo/apps/miniconda3/envs/hylang/lib/python3.6/site-packages/calysto_hy/kernel.py", line 13, in <module>
    from hy.macros import _hy_macros, load_macros
ImportError: cannot import name '_hy_macros'

I searched in ~/apps/miniconda3/envs/hylang/lib/python3.6/site-packages/hy/macros.py, there isn't _hy_macros in this module.

Environment:

$ conda list|ag anaconda
anaconda                  custom           py36hbbc8b67_0  
anaconda-client           1.7.2                    py36_0  
anaconda-project          0.8.2                    py36_0  

$ conda list|ag python  
ipython                   7.2.0            py36h39e3cac_0  
ipython_genutils          0.2.0            py36hb52b0d5_0  
msgpack-python            0.5.6            py36h6bb024c_1  
python                    3.6.6             hd21baee_1003    conda-forge
python-dateutil           2.7.5                    py36_0  
python-libarchive-c       2.8                      py36_6  

$ conda list|ag hy    
# packages in environment at /home/leo/apps/miniconda3/envs/hylang:
calysto-hy                0.1.1                     <pip>
cryptography              2.3.1           py36hb7f436b_1000    conda-forge
hy                        0.15.0+64.ga42e17a           <pip>
jedhy                     1                         <pip>

Ubuntu 16.04.

[dsblank]

Hy must have changed. PRs accepted! :) Thanks for reporting.

[HaiNguyen007]

I have same error, pls help

[josiah14]

A potential solution, in the meantime, is to use Hy version 0.15.0. It's worth noting that this is the only way to get Hy running on Python 3.7 in Jupyter.

pip install git+https://github.com/hylang/hy.git@0.15.0 --force-reinstall

[josiah14]

@HaiNguyen007 Have you had difficulty with defining Macros in my proposed workaround? I seem to not be able to...

In [22]: (defn parse-colon [sym]
       :     (list (map (fn [x]
       :                (if (empty? x)
       :                    None
       :                    (int x)))
       :              (.split (str sym) ":"))))
       :
Out[22]: [None]

In [23]: (defn parse-indexing [sym]
       :   (cond
       :     [(in ":" (str sym)) `(slice ~@(parse-colon sym))]
       :     [(in "..." (str sym)) 'Ellipsis]
       :     [True sym]))
       :
Out[23]: [None]

In [24]: (defmacro nget [ar &rest keys]
       :     `(get ~ar (, ~@(map parse-indexing keys))))
       :
Out[24]: [<function <lambda> at 0x7f203c8328c8>]

In [25]: (import [numpy :as np])
       :
Out[25]: [None]

In [26]: (setv a (np.array [[0 1 2 3 4 5] [10 11 12 13 14 15] [20 21 22 23 24 25] [30 31 32 33 34 35] [40 41 42 43 44 45] [50 51 52 53 54 55]]))
       :
Out[26]: [None]

In [27]: (nget a (, 1 2 3 4 5) (, 0 1 2 3 4))
       :
Traceback (most recent call last):
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/macros.py", line 194, in macroexpand
    obj = m(compiler.module_name, *tree[1:], **opts)
  File "<eval>", line 1, in <lambda>
NameError: name 'parse_indexing' is not defined

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/calysto_hy/kernel.py", line 134, in do_execute_direct
    _ast = hy_compile(tokens, '', root=ast.Interactive)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 1723, in hy_compile
    result = compiler.compile(tree)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 350, in compile
    ret = self.compile_atom(tree)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 344, in compile_atom
    return Result() + _model_compilers[type(atom)](self, atom)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 1699, in compile_list
    elts, ret, _ = self._compile_collect(expression)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 423, in _compile_collect
    ret += self.compile(expr)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 350, in compile
    ret = self.compile_atom(tree)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 344, in compile_atom
    return Result() + _model_compilers[type(atom)](self, atom)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/compiler.py", line 1544, in compile_expression
    expression = macroexpand(expression, self)
  File "/home/josiah/miniconda3/envs/scipy-lectures/lib/python3.7/site-packages/hy/macros.py", line 201, in macroexpand
    raise HyMacroExpansionError(tree, msg)
hy.errors.HyMacroExpansionError:   File "None", line 1, column 1

HyMacroExpansionError: expanding `nget': NameError("name 'parse_indexing' is not defined")

It seems to work in the regular Hy REPL, though...

╰─$ hy
hy 0.15.0 using CPython(default) 3.7.2 on Linux
=> (import [numpy :as np])
=> (setv a (np.array [[0 1 2 3 4 5] [10 11 12 13 14 15] [20 21 22 23 24 25] [30 31 32 33 34 35] [40 41 42 43 44 45] [50 51 52 53 54 55]]))
=> (defn parse-colon [sym]
...     (list (map (fn [x]
...                (if (empty? x)
...                    None
...                    (int x)))
...              (.split (str sym) ":"))))
=>
=> (defn parse-indexing [sym]
...   (cond
...     [(in ":" (str sym)) `(slice ~@(parse-colon sym))]
...     [(in "..." (str sym)) 'Ellipsis]
...     [True sym]))
=> (defmacro nget [ar &rest keys]
...     `(get ~ar (, ~@(map parse-indexing keys))))
<function <lambda> at 0x7fdac66bf620>
=> (nget a (, 0 1 2 3 4) (, 1 2 3 4 5))
array([ 1, 12, 23, 34, 45])

[Karrq]

I've just tried installing it and it failed with the same error. Unfortunately I don't have nearly enough knowledge to fix this but it would be awesome if this kernel actually worked, since this is the only maintained kernel for Hy!

[Karrq]

@josiah14
@leetschau

I digged around and modified the code that loads the macros to reflect the newest changes. Unfortunately there are other problems that prevent any code from running which I'll try to investigate but looks like they are inherent on how the calysto_hy's kernel executes code.
Anyways, if somebody wants to try out the now-installing kernel they can do so using my fork.

[Karrq]

I've modified the kernel yet again and now it runs!
I tried your code, @josiah14 but the issue still persisted. I'll try modifying more and get to the bottom of this.

[JeffCarpenter]

@Karrq, your fork works for me! Time for a PR soon?

[Karrq]

It wasn't working for me last time I tried... Can you tell me what did you try?

[JeffCarpenter]

I believe all I've done here is pip install the repo, python3 -m calysto_hy install --user, and jupyter console --kernel=calysto_hy

[Karrq]

@JeffCarpenter I meant to ask if you tried to use the code posted by @josiah14, as you can't declare new macros but you can run the kernel normally.

[hastebrot]

To run the hy metakernel on Jupyter console and notebook I used following commands:

$ pip3 install --user --force-reinstall ipython jupyter jupyterlab
$ pip3 install --user --force-reinstall metakernel ipyparallel

$ pip3 install --user --force-reinstall git+https://github.com/hylang/hy.git@0.17.0
$ pip3 install --user --force-reinstall git+https://github.com/Karrq/calysto_hy.git

$ pip3 install --force-reinstall jupyter
$ python3 -m calysto_hy install --user

$ jupyter console --kernel calysto_hy
$ jupyter notebook --notebook-dir=.jupyter/

Versions:

• macOS Mojave 10.14.5
• ipython 7.8.0
• jupyter core 4.5.0
• jupyter console 6.0.0
• jupyter notebook 6.0.1
• jupyter lab 1.1.1
• calysto metakernel 0.24.2
• calysto hy 0.1.1 (with commits by @Karrq)

[josiah14]

@hastebrot I tried your exact instructions right now, and while the repl does boot up (in the case of Jupyter console) and you can type code in, and it highlights the syntax, it doesn't actually interpret any of the code entered by the end user. You can submit code, but no results are ever returned, and if you mess around long enough, you'll get this error message:

/home/josiah/miniconda3/envs/hyid3_and_seq/lib/python3.7/site-packages/jupyter_console/ptshell.py:661: UserWarning: The kernel did not respond to an is_complete_request. Setting `use_kernel_is_complete` to False.
  warn('The kernel did not respond to an is_complete_request. '

[josiah14]

I also cannot import any Pip installed Python modules (like NumPy) in versions of Hy > 0.15 (so 0.15 is the latest version that I find actually usable).

Also still unable to run my macros inside of Jupyter Console on any version of Hy (obviously I guess, since not much has changed on version 0.15, and I can't get 0.16 and 0.17 working in any meaningfully useful way).

[josiah14]

For others that come here, it appears that Hy and Calysto_Hy don't play nice with Conda/Anaconda created virtualenvs. I got everything except macros in the jupyter console working using pipenv on Hy 0.17.0 and Calysto_Hy 0.1.1.