diff options
Diffstat (limited to 'Doc/howto/argparse.rst')
| -rw-r--r-- | Doc/howto/argparse.rst | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/Doc/howto/argparse.rst b/Doc/howto/argparse.rst index 9d770f5..e78a022 100644 --- a/Doc/howto/argparse.rst +++ b/Doc/howto/argparse.rst @@ -24,7 +24,7 @@ Concepts Let's show the sort of functionality that we are going to explore in this introductory tutorial by making use of the :command:`ls` command: -.. code-block:: sh +.. code-block:: shell-session $ ls cpython devguide prog.py pypy rm-unused-function.patch @@ -77,7 +77,7 @@ Let us start with a very simple example which does (almost) nothing:: Following is a result of running the code: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py $ python3 prog.py --help @@ -119,7 +119,7 @@ An example:: And running the code: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py usage: prog.py [-h] echo @@ -164,7 +164,7 @@ by reading the source code. So, let's make it a bit more useful:: And we get: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py -h usage: prog.py [-h] echo @@ -185,7 +185,7 @@ Now, how about doing something even more useful:: Following is a result of running the code: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 Traceback (most recent call last): @@ -206,7 +206,7 @@ give it as strings, unless we tell it otherwise. So, let's tell Following is a result of running the code: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 16 @@ -233,7 +233,7 @@ have a look on how to add optional ones:: And the output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py --verbosity 1 verbosity turned on @@ -279,7 +279,7 @@ Let's modify the code accordingly:: And the output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py --verbose verbosity turned on @@ -325,7 +325,7 @@ versions of the options. It's quite simple:: And here goes: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py -v verbosity turned on @@ -359,7 +359,7 @@ Our program keeps growing in complexity:: And now the output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py usage: prog.py [-h] [-v] square @@ -395,7 +395,7 @@ multiple verbosity values, and actually get to use them:: And the output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 16 @@ -429,7 +429,7 @@ Let's fix it by restricting the values the ``--verbosity`` option can accept:: And the output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 -v 3 usage: prog.py [-h] [-v {0,1,2}] square @@ -470,7 +470,7 @@ verbosity argument (check the output of ``python --help``):: We have introduced another action, "count", to count the number of occurrences of a specific optional arguments: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 16 @@ -537,7 +537,7 @@ Let's fix:: And this is what it gives: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 -vvv the square of 4 equals 16 @@ -581,7 +581,7 @@ it gets the ``None`` value, and that cannot be compared to an int value And: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 16 @@ -614,7 +614,7 @@ not just squares:: Output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py usage: prog.py [-h] [-v] x y @@ -652,7 +652,7 @@ to display *more* text instead:: Output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 2 16 @@ -695,7 +695,7 @@ which will be the opposite of the ``--verbose`` one:: Our program is now simpler, and we've lost some functionality for the sake of demonstration. Anyways, here's the output: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py 4 2 4^2 == 16 @@ -739,7 +739,7 @@ Note that slight difference in the usage text. Note the ``[-v | -q]``, which tells us that we can either use ``-v`` or ``-q``, but not both at the same time: -.. code-block:: sh +.. code-block:: shell-session $ python3 prog.py --help usage: prog.py [-h] [-v | -q] x y |