Advanced Python

• Installation
• import numpy as np
• Request is deprecated
• Python 2.x is deprecated (Python 2.7 is usually pre-installed on Macs 3-7 years from 2020). 
• BeautifulSoup
• Pyecharts
• Scrapy
• mylist = [1,2,3,4]
• np_array= np.array(mylist)
• Slicing
• Entire list mylist[:]
• Slicing zeroth to 0th, 1st element mylist[0:2]
• The second position is exclusive
• Function signature
• What type of input is expected? Example CSV
• What type of output is expected?
• What is the functionaltiy
• Each functionality does one task
• Using an IDE
• Anaconda Spyder (Scientific Python Development Environment)
• PyCharm What is pycharm https://ml.learn-to-code.co/skillView.html?skill=Bx3bnZQvelMdHisZlQnj
• Why use an IDE: 
• tool kit plugin
• Pycharm can also refactor update references when files move
• get styling hints: json does not allow trailing comma
• error highlighting
• which python
• this command is used to check which python version is launched
• pip is the package management tool. It is used to install python software packages.  Can also use pip to install another package manager, specializing in data science tasks called anaconda.
• In any language, do not overly rely on print statements for debugging.
• String is immutable example: string"[2] = 3 # TypeError: 'str' object does not support item assignment
• Style
• Use indentation to track code hierarchy, nested function calls etc.
• Type hinting : modern python can specify variable types and get type hinting as a result. todo add flash card
• Use args[index_num] to access one of the inputs (to a function, by indexing the list of arguments)
• The last element in a python list does not have the next method, if calling next() on a python list generator when it is already the last item, there will be an error. next(my_generator) --> StopIteration