python if语句的原子氢错误“解析时出现意外的EOF”！ （但其他声明除外）

Question

Seems to be a problem w/ how Atom / Hydrogen interprets the code. for loops it will give me the option to "fold" or "collapse" by clicking the carrot in the line number. Yet, if blocks/statements have no such luck.

Editor name and version: Atom 1.35.1

Platform: Mac OS Sierra 10.12.6

Color scheme: One Dark/Solarized Dark

## this works: 
for i in range(10): 
    print( i)

## this doesn't: 
if not False: 
    print("test worked")

## this example doesn't throw an error, but only executes the "if" and not the else parts: 
x= False
if x == True:
    print("test")
elif x == None:
    print ('test anyway')
else:
    print('test again')

I've completely uninstalled atom and deleted all known remaining files (see enter link description here , then reinstalled and problem persists.

Answer 1

Try selecting all the code you want to run before calling the run command.

The other option is to use cells and the hydrogen:run-cell command:

# %% Works if you run cells individually with `ctrl+shift+enter`
for i in range(10):
    print( i)

# %% this will now too: 
if not False: 
    print("test worked")

# %%
x= False
if x == True:
    print("test")
elif x == None:
    print ('test anyway')
else:
    print('test again')

Unless you select the code you want to run or use cells, Hydrogen tries to figure it out using atom grammar and code folding. Usually it will get it right, but Python indentation and whitespace sometimes throws it off.

Feel free to open an issue if you think this bug should be prioritized, but it may depend on atom apis upstream and the workaround is easy enough I think.

Answer 2

The folding of if statements seems to be a bug in the languages-python plugin, eg., see https://github.com/atom/language-python/pull/300 (they are working on it).

They encouraged me to open a bug issue in hydrogen. Viola: https://github.com/nteract/hydrogen/issues/1589

I believe the solution will be to upgrade once versions are rolled up. This doesn't seem to be a configuration/settings problem at this point.