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--- info:cursos:udemy:python-mega-course [09/10/2024 02:22] – [Cheatsheet: Loops] mate
+++ info:cursos:udemy:python-mega-course [18/10/2024 04:12] (actual) – [Curso python udemy] mate
@@ Línia 1: / Línia 1: @@
 = Curso python udemy
+  * [[https://www.udemy.com/course/former-python-mega-course-build-10-real-world-applications/learn/lecture/34362798#overview]]
+== interesante
+  * Numpy: manejo de matrices
+  * Web Mapping: creación mapas interactivos HTML
+  * Manejo Webcam
+  * Bokeh: libreria representación gráficos -> [[development:python:bokeh|]]
+  * Pandas: libreria de analisis de datos -> [[development:python:pandas|]]
+  * Flask: web development
+  * openCV: image processing library
+  * Mobile app: apk
+  * Web Scraping
+  * pyinstaller: creación de ejecutables
+== jupyter notebook
+  * <code bash>sudo apt install libsqlite3-dev</code>
+  * <code bash>pip3 install jupyter notebook</code>
+  * <code bash>jupyter notebook</code>
 == Cheatsheet: Data Types
   * Integers are used to represent whole numbers:<code python>rank = 10
@@ Línia 206: / Línia 223: @@
   * A basic list comprehension:<code python>
-[i*2 for i in [1, 5, 10]]</code><code>
+[i*2 for i in [1, 5, 10]]</code><code ; output>
 [2, 10, 20]</code>
   * List comprehension with if condition:<code python>
-[i*2 for i in [1, -2, 10] if i>0]</code><code>
+[i*2 for i in [1, -2, 10] if i>0]</code><code ; output>
 [2, 20]</code>
   * List comprehension with an if and else condition:<code python>
-[i*2 if i>0 else 0 for i in [1, -2, 10]]</code><code>
+[i*2 if i>0 else 0 for i in [1, -2, 10]]</code><code ; output>
 [2, 0, 20]</code>
+== Cheatsheet: More on Functions
+  * Functions can have more than one parameter:<code python>
+def volume(a, b, c):
+    return a * b * c</code>
+  * Functions can have default parameters (e.g. coefficient):<code python>
+def converter(feet, coefficient = 3.2808):
+    meters = feet / coefficient
+    return meters
+print(converter(10))
+# Output: 3.0480370641306997
+</code>
+  * Arguments can be passed as non-keyword (positional) arguments (e.g. a) or keyword arguments (e.g. b=2 and c=10):<code python>
+def volume(a, b, c):
+    return a * b * c
+print(volume(1, b=2, c=10))
+</code>
+  * An *args parameter allows the  function to be called with an arbitrary number of non-keyword arguments:<code python>
+def find_max(*args):
+    return max(args)
+print(find_max(3, 99, 1001, 2, 8))
+# Output: 1001
+</code>
+  * A %%**%%kwargs parameter allows the function to be called with an arbitrary number of keyword arguments:<code python>
+def find_winner(**kwargs):
+    return max(kwargs, key = kwargs.get)
+print(find_winner(Andy = 17, Marry = 19, Sim = 45, Kae = 34))
+# Output: Sim
+</code>
+  * Here's a summary of function elements:{{:info:cursos:udemy:pasted:20241009-022827.png?300}}
+== Cheatsheet: File Processing
+  * You can read an existing file with Python:<code python>
+with open("file.txt") as file:
+    content = file.read()
+</code>
+  * You can create a new file with Python and write some text on it:<code python>
+with open("file.txt", "w") as file:
+    content = file.write("Sample text")
+</code>
+  * You can append text to an existing file without overwriting it:<code python>
+with open("file.txt", "a") as file:
+    content = file.write("More sample text")</code>
+  * You can both append and read a file with:<code python>
+with open("file.txt", "a+") as file:
+    content = file.write("Even more sample text")
+    file.seek(0)
+    content = file.read()
+</code>
+== Cheatsheet: Imported Modules
+  * Builtin objects are all objects that are written inside the Python interpreter in C language.
+  * Builtin modules contain builtins objects.
+  * Some builtin objects are not immediately available in the global namespace. They are parts of a builtin module. To use those objects the module needs to be imported first. E.g.:<code python>
+import time
+time.sleep(5)
+</code>
+  * A list of all builtin modules can be printed out with:<code python>
+import sys
+sys.builtin_module_names
+</code>
+  * Standard libraries is a jargon that includes both builtin modules written in C and also modules written in Python.
+  * Standard libraries written in Python reside in the Python installation directory as .py files. You can find their directory path with ''sys.prefix''.
+  * Packages are a collection of .py modules.
+  * Third-party libraries are packages or modules written by third-party persons (not the Python core development team).
+  * Third-party libraries can be installed from the terminal/command line:
+    * Windows:<code python>
+pip install pandas # or use
+python -m pip install pandas # if that doesn't work.
+</code>
+    * Mac and Linux:<code python>
+pip3 install pandas # or use
+python3 -m pip install pandas # if that doesn't work.
+</code>
+== Flask
+<code bash>pip install Flask</code>
+<code python script1.py>
+from flask import Flask, render_template
+app=Flask(__name__)
+@app.route("/")
+def home():
+    return render_template("home.html")
+@app.route("/about")
+def about():
+    return render_template("about.html")
+if __name__=="__main__":
+    app.run(debug=True)
+</code>
+<code html templates/menu.html>
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Flask app </title>
+        <link rel="stylesheet" href="{{ url_for('static', filename='css/main.css') }}">
+    </head>
+    <body>
+        <header>
+            <div class="container">
+                <h1 class="logo">Python Flask test page</h1>
+                <ul class="menu">
+                    <li><a href="{{ url_for('home') }}">HOME</a></li>
+                    <li><a href="{{ url_for('about') }}">ABOUT</a></li>
+                </u1>
+            </div>
+        </header>
+        <div class="container">
+            {%block content%}
+            {%endblock%}
+        </div>
+    </body>
+</html>
+</code>
+<code html templates/home.html>
+{%extends "menu.html"%}
+{%block content%}
+    <h2>HOME PAGE</h1>
+{%endblock%}
+</code>
+<code html templates/about.html>
+{%extends "menu.html"%}
+{%block content%}
+    <h2>ABOUT PAGE</h1>
+{%endblock%}
+</code>
+<code css static/css/main.css>
+body {
+  margin: 0;
+  padding: 0;
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  color: #060;
+}
+/*
+ * Formatting the header area
+ */
+header {
+  background-color: #DFB887;
+  height: 35px;
+  width: 100%;
+  opacity: .9;
+  margin-bottom: 10px;
+}
+header h1.logo {
+  margin: 0;
+  font-size: 1.7em;
+  color: #fff;
+  text-transform: uppercase;
+  float: left;
+}
+header h1.logo:hover {
+  color: #fff;
+  text-decoration: none;
+}
+/*
+ * Center the body content
+ */
+.container {
+  width: 1200px;
+  margin: 0 auto;
+}
+div.home {
+  padding: 10px 0 30px 0;
+  background-color: #E6E6FA;
+  -webkit-border-radius: 6px;
+     -moz-border-radius: 6px;
+          border-radius: 6px;
+}
+div.about {
+  padding: 10px 0 30px 0;
+  background-color: #E6E6FA;
+  -webkit-border-radius: 6px;
+     -moz-border-radius: 6px;
+          border-radius: 6px;
+}
+h2 {
+  font-size: 3em;
+  margin-top: 40px;
+  text-align: center;
+  letter-spacing: -2px;
+}
+h3 {
+  font-size: 1.7em;
+  font-weight: 100;
+  margin-top: 30px;
+  text-align: center;
+  letter-spacing: -1px;
+  color: #999;
+}
+.menu {
+  float: right;
+  margin-top: 8px;
+}
+.menu li {
+  display: inline;
+}
+.menu li + li {
+  margin-left: 35px;
+}
+.menu li a {
+  color: #444;
+  text-decoration: none;
+}
+</code>