From 1f4f026086ebba825a3af71e14375f21f59b207f Mon Sep 17 00:00:00 2001
From: Rohit Tanwar <mst10041967@gmail.com>
Date: Wed, 18 Apr 2018 12:20:52 +0000
Subject: [PATCH] Travis build: 955

---
 README.md                        | 130 ++++++++++++++++++++++++++++++-
 test/keys_only/keys_only.py      |   4 +-
 website/app/snippets             |  11 +--
 website/app/templates/index.html |  66 +++++++++++++++-
 4 files changed, 195 insertions(+), 16 deletions(-)

diff --git a/README.md b/README.md
index 44d45d672..5fcee75cb 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,20 @@
 ![Logo](/icon.png)
 
-# 30-seconds-of-python-code [![Tweet](http://jpillora.com/github-twitter-button/img/tweet.png)](http://www.twitter.com/share?text=%2330secondsofcode+30-seconds-of-python-code+-+Python+Implementation+of+30+seconds+of+code%0Ahttps://github.com/kriadmin/30-seconds-of-python-code&url=a")
+# 30-seconds-of-python-code [![Tweet](https://jpillora.com/github-twitter-button/img/tweet.png)](http://www.twitter.com/share?text=%2330secondsofcode+30-seconds-of-python-code+-+Python+Implementation+of+30+seconds+of+code%0Ahttps://github.com/kriadmin/30-seconds-of-python-code&url=a")
 [![License](https://img.shields.io/aur/license/yaourt.svg)](https://github.com/kriadmin/30-seconds-of-python-code/blob/master/LICENSE)
-[![first-timers-only](http://img.shields.io/badge/first--timers--only-friendly-blue.svg?style=flat-square)](http://www.firsttimersonly.com/) [![Gitter chat](https://img.shields.io/badge/chat-on%20gitter-4FB999.svg)](https://gitter.im/30-seconds-of-python-code/Lobby) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](http://makeapullrequest.com) [![Travis Build](https://travis-ci.org/kriadmin/30-seconds-of-python-code.svg?branch=master)](https://travis-ci.org/kriadmin/30-seconds-of-python-code) [![Insight.io](https://img.shields.io/badge/insight.io-Ready-brightgreen.svg)](https://insight.io/github.com/kriadmin/30-seconds-of-python-code/tree/master/?source=0) [![js-semistandard-style](https://img.shields.io/badge/code%20style-semistandard-brightgreen.svg)](https://github.com/Flet/semistandard)
+[![first-timers-only](https://img.shields.io/badge/first--timers--only-friendly-blue.svg?style=flat-square)](http://www.firsttimersonly.com/) [![Gitter chat](https://img.shields.io/badge/chat-on%20gitter-4FB999.svg)](https://gitter.im/30-seconds-of-python-code/Lobby) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](http://makeapullrequest.com) [![Travis Build](https://travis-ci.org/kriadmin/30-seconds-of-python-code.svg?branch=master)](https://travis-ci.org/kriadmin/30-seconds-of-python-code) [![Insight.io](https://img.shields.io/badge/insight.io-Ready-brightgreen.svg)](https://insight.io/github.com/kriadmin/30-seconds-of-python-code/tree/master/?source=0) [![js-semistandard-style](https://img.shields.io/badge/code%20style-semistandard-brightgreen.svg)](https://github.com/Flet/semistandard)
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fkriadmin%2F30-seconds-of-python-code.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Fkriadmin%2F30-seconds-of-python-code?ref=badge_shield)
 
->Python implementation of 30-seconds-of-code.
+## Welcome to 30-seconds-of-🐍-code!
+
+>A Python implementation of 30-seconds-of-code.
 
 **Note**:- This is in no way affiliated with the original [30-seconds-of-code](https://github.com/Chalarangelo/30-seconds-of-code/).
 
+If you've come here from javascript land then you should be aware that this project uses `python 3`, therefore not all snippets will work as expected in every python interpreter or on system. You'll need to check your python version with the command `python -v`. If you need help installing the latest stable release of python 3 on your system checkout docs.python.org if you run into trouble make sure you research stackoverflow. Eventually it might be worth looking into how to set up a virtual environment for python projects with virtualenv or even a tool like anaconda.
+
+This project contains plenty of useful snippets which can help beginners and newcomers quickly ramp-up on grasping python 3's syntax.
+
 ### Table of contents
 ### :books: List
 
@@ -20,6 +26,7 @@
 <li><a href = "#deep_flatten"><code>deep_flatten</code></a></li>
 <li><a href = "#difference"><code>difference</code></a></li>
 <li><a href = "#difference_by"><code>difference_by</code></a></li>
+<li><a href = "#has_duplicates"><code>has_duplicates</code></a></li>
 <li><a href = "#insertion_sort"><code>insertion_sort</code></a></li>
 <li><a href = "#shuffle"><code>shuffle</code></a></li>
 <li><a href = "#spread"><code>spread</code></a></li>
@@ -36,6 +43,13 @@
 <li><a href = "#min_n"><code>min_n</code></a></li>
 </ul></details>
 
+### card_file_box Object
+
+<details><summary>View contents</summary> <ul><li><a href = "#all_unique"><code>all_unique</code></a></li>
+<li><a href = "#keys_only"><code>keys_only</code></a></li>
+<li><a href = "#values_only"><code>values_only</code></a></li>
+</ul></details>
+
 ### :scroll: String
 
 <details><summary>View contents</summary> <ul><li><a href = "#byte_size"><code>byte_size</code></a></li>
@@ -256,6 +270,30 @@ difference_by([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], lambda v : v['x']) # [ { x
 
 <br><a href = "#table-of-contents">:arrow_up: Back to top</a>
 
+### has_duplicates 
+<span style="color:grey">Author:-</span> [Rob-Rychs](@Rob-Rychs) 
+
+ <span style="color:grey">Contributors:-</span> [Rob-Rychs](@Rob-Rychs)
+
+Checks a flat list for duplicate values. Returns True if duplicate values exist and False if values are all unique.
+
+This function compares the length of the list with length of the set() of the list. set() removes duplicate values from the list.
+```py
+def has_duplicates(lst):
+    return len(lst) != len(set(lst))
+```
+<details><summary>View Examples</summary>
+
+```py
+x = [1,2,3,4,5,5]
+y = [1,2,3,4,5]
+has_duplicates(x) # True
+has_duplicates(y) # False
+```
+</details>
+
+<br><a href = "#table-of-contents">:arrow_up: Back to top</a>
+
 ### insertion_sort 
 <span style="color:grey">Author:-</span> [Meet Zaveri](https://www.github.com/meetzaveri) 
 
@@ -385,7 +423,7 @@ zip(['a'], [1, 2], [True, False], fill_value = '_') # [['a', 1, True], ['_', 2,
 
 Returns the average of two or more numbers.
 
-Takes the sum of all the `args` and divides it by `len(args)`. The second argument `0.0` in sum is to handle floating point division in `python2`.
+Takes the sum of all the `args` and divides it by `len(args)`. The second argument `0.0` in sum is to handle floating point division in `python3`.
 ```py
 def average(*args):
     return sum(args, 0.0) / len(args)
@@ -563,6 +601,90 @@ min_n([1, 2, 3], 2) # [1,2]
 
 <br><a href = "#table-of-contents">:arrow_up: Back to top</a>
 
+## card_file_box Object
+
+### all_unique 
+<span style="color:grey">Author:-</span> [Rob-Rychs](@Rob-Rychs) 
+
+ <span style="color:grey">Contributors:-</span> [Rob-Rychs](@Rob-Rychs)
+
+Checks a flat list for all unique values. Returns True if list values are all unique and False if list values aren't all unique.
+
+This function compares the length of the list with length of the set() of the list. set() removes duplicate values from the list.
+```py
+def all_unique(lst):
+    return len(lst) == len(set(lst))
+```
+<details><summary>View Examples</summary>
+
+```py
+x = [1,2,3,4,5,6]
+y = [1,2,2,3,4,5]
+all_unique(x) # True
+all_unique(y) # False
+```
+</details>
+
+<br><a href = "#table-of-contents">:arrow_up: Back to top</a>
+
+### keys_only 
+<span style="color:grey">Author:-</span> [Rob-Rychs](@Rob-Rychs) 
+
+ <span style="color:grey">Contributors:-</span> [Rob-Rychs](@Rob-Rychs)
+
+Function which accepts a dictionary of key value pairs and returns a new flat list of only the keys.
+
+Uses the .items() function with a for loop on the dictionary to track both the key and value and returns a new list by appending the keys to it. Best used on 1 level-deep key:value pair dictionaries (a flat dictionary) and not nested data-structures which are also commonly used with dictionaries. (a flat dictionary resembles a json and a flat list an array for javascript people).
+```py
+def keys_only(flat_dict):
+    lst = []
+    for k, v in flat_dict.items():
+        lst.append(k)
+    return lst
+```
+<details><summary>View Examples</summary>
+
+```py
+ages = {
+     "Peter": 10,
+     "Isabel": 11,
+     "Anna": 9,
+}
+keys_only(ages) # ['Peter', 'Isabel', 'Anna']
+```
+</details>
+
+<br><a href = "#table-of-contents">:arrow_up: Back to top</a>
+
+### values_only 
+<span style="color:grey">Author:-</span> [Rob-Rychs](@Rob-Rychs) 
+
+ <span style="color:grey">Contributors:-</span> [Rob-Rychs](@Rob-Rychs)
+
+Function which accepts a dictionary of key value pairs and returns a new flat list of only the values.
+
+Uses the .items() function with a for loop on the dictionary to track both the key and value of the iteration and returns a new list by appending the values to it. Best used on 1 level-deep key:value pair dictionaries and not nested data-structures.
+```py
+def values_only(dict):
+    lst = []
+    for k, v in dict.items():
+        lst.append(v)
+    return lst
+```
+<details><summary>View Examples</summary>
+
+```py
+ages = {
+     "Peter": 10,
+     "Isabel": 11,
+     "Anna": 9,
+}
+values_only(ages) # [10, 11, 9]
+```
+</details>
+
+<br><a href = "#table-of-contents">:arrow_up: Back to top</a>
+
 ## :scroll: String
 
 ### byte_size 
diff --git a/test/keys_only/keys_only.py b/test/keys_only/keys_only.py
index 5f97a2265..43d879917 100644
--- a/test/keys_only/keys_only.py
+++ b/test/keys_only/keys_only.py
@@ -1,5 +1,5 @@
-def keys_only(dict):
+def keys_only(flat_dict):
     lst = []
-    for k, v in dict.items():
+    for k, v in flat_dict.items():
         lst.append(k)
     return lst
\ No newline at end of file
diff --git a/website/app/snippets b/website/app/snippets
index 28ea1fabc..9b16aa4f6 100644
--- a/website/app/snippets
+++ b/website/app/snippets
@@ -1,8 +1,3 @@
-count_vowels
-byte_size
-capitalize
-capitalize_every_word
-decapitalize
-palindrome
-is_upper_case
-is_lower_case
\ No newline at end of file
+keys_only
+values_only
+all_unique
\ No newline at end of file
diff --git a/website/app/templates/index.html b/website/app/templates/index.html
index dfb026db0..bb18cd40d 100644
--- a/website/app/templates/index.html
+++ b/website/app/templates/index.html
@@ -1,9 +1,9 @@
 {% extends "base.html" %}
 
-{% block content %}<div class="row" style="height:calc(100vh - 5.875rem);overflow:hidden"><input id="doc-drawer-checkbox" class="drawer" value="on" type="checkbox"><nav class="col-md-4 col-lg-3" style="border-top:0"><div class="group"><input class="search" id="searchInput" onkeyup="search(this)" type="text"><label id="search-label">Search for snippet...</label></div><label for="doc-drawer-checkbox" class="button drawer-close"></label><h3 style = "">Math</h3><a class="sublink-1" tags="math" href="#average" style="">average</a><a class="sublink-1" tags="math" href="#factorial" style="">factorial</a><a class="sublink-1" tags="math" href="#gcd" style="">gcd</a><a class="sublink-1" tags="math" href="#lcm" style="">lcm</a><a class="sublink-1" tags="math" href="#max_n" style="">max_n</a><a class="sublink-1" tags="math" href="#min_n" style="">min_n</a><h3 style = "">List</h3><a class="sublink-1" tags="list" href="#chunk" style="">chunk</a><a class="sublink-1" tags="list" href="#compact" style="">compact</a><a class="sublink-1" tags="list" href="#count_occurences" style="">count_occurences</a><a class="sublink-1" tags="list" href="#deep_flatten" style="">deep_flatten</a><a class="sublink-1" tags="list" href="#difference" style="">difference</a><a class="sublink-1" tags="list" href="#shuffle" style="">shuffle</a><a class="sublink-1" tags="list" href="#spread" style="">spread</a><a class="sublink-1" tags="list" href="#zip" style="">zip</a><a class="sublink-1" tags="list" href="#count_by" style="">count_by</a><a class="sublink-1" tags="list" href="#difference_by" style="">difference_by</a><a class="sublink-1" tags="list" href="#insertion_sort" style="">insertion_sort</a><a class="sublink-1" tags="list" href="#bubble_sort" style="">bubble_sort</a><h3 style = "">String</h3><a class="sublink-1" tags="string" href="#count_vowels" style="">count_vowels</a><a class="sublink-1" tags="string" href="#byte_size" style="">byte_size</a><a class="sublink-1" tags="string" href="#capitalize" style="">capitalize</a><a class="sublink-1" tags="string" href="#capitalize_every_word" style="">capitalize_every_word</a><a class="sublink-1" tags="string" href="#decapitalize" style="">decapitalize</a><a class="sublink-1" tags="string" href="#palindrome" style="">palindrome</a><a class="sublink-1" tags="string" href="#is_upper_case" style="">is_upper_case</a><a class="sublink-1" tags="string" href="#is_lower_case" style="">is_lower_case</a></nav><main class="col-sm-12 col-md-8 col-lg-9" style="height:100%;overflow-y:auto;background:#eceef2;padding:0"><a id="top"></a><h2 style="text-align:center">Math</h2><div class="card fluid"><h3 id="average" class="section double-padded">average</h3><!--<form action="" method="post"><button type="submit" value="average" name="submit">Vote</button></form><p></p>--><div class="section double-padded">
+{% block content %}<div class="row" style="height:calc(100vh - 5.875rem);overflow:hidden"><input id="doc-drawer-checkbox" class="drawer" value="on" type="checkbox"><nav class="col-md-4 col-lg-3" style="border-top:0"><div class="group"><input class="search" id="searchInput" onkeyup="search(this)" type="text"><label id="search-label">Search for snippet...</label></div><label for="doc-drawer-checkbox" class="button drawer-close"></label><h3 style = "">Math</h3><a class="sublink-1" tags="math" href="#average" style="">average</a><a class="sublink-1" tags="math" href="#factorial" style="">factorial</a><a class="sublink-1" tags="math" href="#gcd" style="">gcd</a><a class="sublink-1" tags="math" href="#lcm" style="">lcm</a><a class="sublink-1" tags="math" href="#max_n" style="">max_n</a><a class="sublink-1" tags="math" href="#min_n" style="">min_n</a><h3 style = "">List</h3><a class="sublink-1" tags="list" href="#chunk" style="">chunk</a><a class="sublink-1" tags="list" href="#compact" style="">compact</a><a class="sublink-1" tags="list" href="#count_occurences" style="">count_occurences</a><a class="sublink-1" tags="list" href="#deep_flatten" style="">deep_flatten</a><a class="sublink-1" tags="list" href="#difference" style="">difference</a><a class="sublink-1" tags="list" href="#shuffle" style="">shuffle</a><a class="sublink-1" tags="list" href="#spread" style="">spread</a><a class="sublink-1" tags="list" href="#zip" style="">zip</a><a class="sublink-1" tags="list" href="#count_by" style="">count_by</a><a class="sublink-1" tags="list" href="#difference_by" style="">difference_by</a><a class="sublink-1" tags="list" href="#insertion_sort" style="">insertion_sort</a><a class="sublink-1" tags="list" href="#bubble_sort" style="">bubble_sort</a><a class="sublink-1" tags="list" href="#has_duplicates" style="">has_duplicates</a><h3 style = "">String</h3><a class="sublink-1" tags="string" href="#count_vowels" style="">count_vowels</a><a class="sublink-1" tags="string" href="#byte_size" style="">byte_size</a><a class="sublink-1" tags="string" href="#capitalize" style="">capitalize</a><a class="sublink-1" tags="string" href="#capitalize_every_word" style="">capitalize_every_word</a><a class="sublink-1" tags="string" href="#decapitalize" style="">decapitalize</a><a class="sublink-1" tags="string" href="#palindrome" style="">palindrome</a><a class="sublink-1" tags="string" href="#is_upper_case" style="">is_upper_case</a><a class="sublink-1" tags="string" href="#is_lower_case" style="">is_lower_case</a><h3 style = "">Object</h3><a class="sublink-1" tags="object" href="#keys_only" style="">keys_only</a><a class="sublink-1" tags="object" href="#values_only" style="">values_only</a><a class="sublink-1" tags="object" href="#all_unique" style="">all_unique</a></nav><main class="col-sm-12 col-md-8 col-lg-9" style="height:100%;overflow-y:auto;background:#eceef2;padding:0"><a id="top"></a><h2 style="text-align:center">Math</h2><div class="card fluid"><h3 id="average" class="section double-padded">average</h3><!--<form action="" method="post"><button type="submit" value="average" name="submit">Vote</button></form><p></p>--><div class="section double-padded">
 <p><emoji>ℹ</emoji> Already implemented via <code>statistics.mean</code>. <code>statistics.mean</code> takes an array as an argument whereas this function takes variadic arguments.</p>
 <p>Returns the average of two or more numbers.</p>
-<p>Takes the sum of all the <code>args</code> and divides it by <code>len(args)</code>. The second argument <code>0.0</code> in sum is to handle floating point division in <code>python2</code>.</p>
+<p>Takes the sum of all the <code>args</code> and divides it by <code>len(args)</code>. The second argument <code>0.0</code> in sum is to handle floating point division in <code>python3</code>.</p>
 
 <pre class="language-python">def average(*args):
     return sum(args, 0.0) / len(args)</pre>
@@ -306,6 +306,19 @@ bubble_sort(lst)
 print("sorted %s" %lst) # [17,20,26,31,44,54,55,77,91]</pre>
 <button class="primary clipboard-copy">📋&nbsp;Copy to clipboard</button></div>
 
+</div><div class="card fluid"><h3 id="has_duplicates" class="section double-padded">has_duplicates</h3><!--<form action="" method="post"><button type="submit" value="has_duplicates" name="submit">Vote</button></form><p></p>--><div class="section double-padded">
+<p>Checks a flat list for duplicate values. Returns True if duplicate values exist and False if values are all unique.</p>
+<p>This function compares the length of the list with length of the set() of the list. set() removes duplicate values from the list.</p>
+
+<pre class="language-python">def has_duplicates(lst):
+    return len(lst) != len(set(lst))</pre>
+<label class="collapse">Show examples</label>
+<pre class="language-python">x = [1,2,3,4,5,5]
+y = [1,2,3,4,5]
+has_duplicates(x) # True
+has_duplicates(y) # False</pre>
+<button class="primary clipboard-copy">📋&nbsp;Copy to clipboard</button></div>
+
 </div><h2 style="text-align:center">String</h2><div class="card fluid"><h3 id="count_vowels" class="section double-padded">count_vowels</h3><!--<form action="" method="post"><button type="submit" value="count_vowels" name="submit">Vote</button></form><p></p>--><div class="section double-padded">
 <p>Retuns <code>number</code> of vowels in provided <code>string</code>.</p>
 <p>Use a regular expression to count the number of vowels <code>(A, E, I, O, U)</code> in a string.</p>
@@ -399,6 +412,55 @@ is_lower_case('a3@$') # True
 is_lower_case('Ab4') # False</pre>
 <button class="primary clipboard-copy">📋&nbsp;Copy to clipboard</button></div>
 
+</div><h2 style="text-align:center">Object</h2><div class="card fluid"><h3 id="keys_only" class="section double-padded">keys_only</h3><!--<form action="" method="post"><button type="submit" value="keys_only" name="submit">Vote</button></form><p></p>--><div class="section double-padded">
+<p>Function which accepts a dictionary of key value pairs and returns a new flat list of only the keys.</p>
+<p>Uses the .items() function with a for loop on the dictionary to track both the key and value and returns a new list by appending the keys to it. Best used on 1 level-deep key:value pair dictionaries (a flat dictionary) and not nested data-structures which are also commonly used with dictionaries. (a flat dictionary resembles a json and a flat list an array for javascript people).</p>
+
+<pre class="language-python">def keys_only(flat_dict):
+    lst = []
+    for k, v in flat_dict.items():
+        lst.append(k)
+    return lst</pre>
+<label class="collapse">Show examples</label>
+<pre class="language-python">ages = {
+     "Peter": 10,
+     "Isabel": 11,
+     "Anna": 9,
+}
+keys_only(ages) # ['Peter', 'Isabel', 'Anna']</pre>
+<button class="primary clipboard-copy">📋&nbsp;Copy to clipboard</button></div>
+
+</div><div class="card fluid"><h3 id="values_only" class="section double-padded">values_only</h3><!--<form action="" method="post"><button type="submit" value="values_only" name="submit">Vote</button></form><p></p>--><div class="section double-padded">
+<p>Function which accepts a dictionary of key value pairs and returns a new flat list of only the values.</p>
+<p>Uses the .items() function with a for loop on the dictionary to track both the key and value of the iteration and returns a new list by appending the values to it. Best used on 1 level-deep key:value pair dictionaries and not nested data-structures.</p>
+
+<pre class="language-python">def values_only(dict):
+    lst = []
+    for k, v in dict.items():
+        lst.append(v)
+    return lst</pre>
+<label class="collapse">Show examples</label>
+<pre class="language-python">ages = {
+     "Peter": 10,
+     "Isabel": 11,
+     "Anna": 9,
+}
+values_only(ages) # [10, 11, 9]</pre>
+<button class="primary clipboard-copy">📋&nbsp;Copy to clipboard</button></div>
+
+</div><div class="card fluid"><h3 id="all_unique" class="section double-padded">all_unique</h3><!--<form action="" method="post"><button type="submit" value="all_unique" name="submit">Vote</button></form><p></p>--><div class="section double-padded">
+<p>Checks a flat list for all unique values. Returns True if list values are all unique and False if list values aren't all unique.</p>
+<p>This function compares the length of the list with length of the set() of the list. set() removes duplicate values from the list.</p>
+
+<pre class="language-python">def all_unique(lst):
+    return len(lst) == len(set(lst))</pre>
+<label class="collapse">Show examples</label>
+<pre class="language-python">x = [1,2,3,4,5,6]
+y = [1,2,2,3,4,5]
+all_unique(x) # True
+all_unique(y) # False</pre>
+<button class="primary clipboard-copy">📋&nbsp;Copy to clipboard</button></div>
+
 </div><button class="scroll-to-top">↑</button>
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