In [40]:

    

from importlib import reload
from collections import OrderedDict
import os


    

In [41]:

    

from IPython.display import display, HTML, IFrame


    

In [42]:

    

import expect
reload(expect)


    

    
Out[42]:





<module 'expect' from '/home/dmmmd/Dropbox/Wyncode-Academy/web-presence/zipped-code/content/posts/devops/expect.py'>

In [43]:

    

commands = (
    ('docker version', 'sudo docker --version'),
    ('dokku version', 'sudo dokku version'),
    ('buildpack', 'sudo dokku config:get docs BUILDPACK_URL'),
)
commands = tuple((name, expect.command_template.format(command))
                 for name, command in commands)
commands = OrderedDict(commands)


    

In [44]:

    

def tweet():
    jose_tweet = """'<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">1. How did I get to the point where I memorized keywords and syntax for 10+ langs?<br>2. Why couldn&#39;t some of these be combined?</p>&mdash; Jose Diaz-Gonzalez (@savant) <a href="https://twitter.com/savant/status/813945152284852224">December 28, 2016</a></blockquote>
<script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>'"""
    return HTML(jose_tweet)


    

In [45]:

    

def wat():
    return IFrame(src='//giphy.com/embed/l0NwQGfPV1EcKE3Xa', width=480, height=456)


    

In [46]:

    

# !$command syntax fails in a comprehension
outputs = []
for name, command in commands.items():
    output = !$command
    *_, output = output  # want last item
    outputs.append((name, output))


    

In [47]:

    

outputs = OrderedDict(outputs)


    

In [48]:

    

def print_outputs():
    for name, value in outputs.items():
        print('{: >25}          {: >6}'.format(name, value))


    

In [49]:

    

def lines_filter(line, state, a='location', b='}'):
    start = a in line
    end = b in line
    if start:
        return start
    if all((state, end)):
        return True
    return False


    

In [50]:

    

nginx_config = os.path.expanduser('~/projects/dokku-static-nginx/app/nginx.conf.erb')
with open(nginx_config) as fh:
    lines = tuple(fh.read().splitlines())


    

In [51]:

    

def search_lines(lines, **kwargs):
    state = False
    i_state = False
    indices = []
    for n, line in enumerate(lines):
        i_state = lines_filter(line, state, **kwargs)
        if i_state:
            state = lines_filter(line, state, **kwargs)
        if all((state, i_state)):
            indices.append(n)
        if len(indices) == 2:
            break
    try:
        s, e = indices
    except ValueError:
        s, = indices
        e = s
    return lines[s:e + 1]


    

In [52]:

    

nginx_directive = '\n'.join(search_lines(lines, a='location', b='}'))


    

In [53]:

    

nginx_config = os.path.expanduser('~/projects/buildpack-nginx/bin/compile')
with open(nginx_config) as fh:
    lines = tuple(fh.read().splitlines())


    

In [54]:

    

nginx_version = '\n'.join(search_lines(lines, a='# Nginx 1.11.8', b='ZLIB_TARBALL'))
try:
    module_directive = '\n'.join(search_lines(lines, a='--without-http_auth_', b='--without-http_auth_'))
except ValueError:
    module_directive = 'empty string'