key tab permits the indent in python3

abd_bela · 08-17-2015, 03:22 AM

while in python2 , the key tab permits the indent, specially we use it in loop or if block,
in python3, tab is binded to completion ,
so it in not possible to write a for block in interactive python3.
ipython3 does it automatically, python3 doesn't neither automatically nor manually.
thanks for help

HMW · 08-17-2015, 05:22 AM

Quote:

Originally Posted by abd_bela

so it in not possible to write a for block in interactive python3.

I beg to differ. Check this out:

Code:

>>> aList = ['foo', 'bar', 'baz']
>>> for item in aList:
... print(item)
  File "<stdin>", line 2
    print(item)
        ^
IndentationError: expected an indented block
>>> for item in aList:
...   print(item)
... 
foo
bar
baz
>>>

Can you spot the difference? In the first example there is no indentation before the print statement:

Code:

... print(item)

But in the second there is:

Code:

...   print(item)

Simply hit the space bar twice, and you're good to go!

Best regards,
HMW

smallpond · 08-18-2015, 02:12 PM

Was your python3 built without readline?

suicidaleggroll · 08-18-2015, 02:38 PM

https://docs.python.org/3/library/site.html

Quote:

On systems that support readline, this module will also import and configure the rlcompleter module, if Python is started in interactive mode and without the -S option. The default behavior is enable tab-completion and to use ~/.python_history as the history save file. To disable it, delete (or override) the sys.__interactivehook__ attribute in your sitecustomize or usercustomize module or your PYTHONSTARTUP file.