DataCamp: Python Basics - Functions
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get the length of a string
len(stringVar)
get definition of a function
help(funcName) or ?funcName
What shows that an argument is optional?
Brackets. Complex(real [, imag]) (imag is optional)
specify which args you’re passing (eg, if you’re skipping an arg and need to be specific)
function(arg1=2, arg3=5) (skipped arg2)
What is a method?
Method is called on an object, and can access the data in that object
upper case, lower case string methods
str.upper(), str.lower()
Count the instances of a substring in a string
string.count(“xxx”)»_space; counts number of “xxx” in string (case sensitive)
return the index of the element 19 in a list
list.index(19)
count the number of times 5 appears in a list
list.count(5)
List methods to append, remove and reverse
list.append(), list.remove(), list.reverse()
what is a python package
Directory of scripts you can use
What is each script in a package called?
Module
What is a python package to help manage packages?
pip
Once you have pip, how do you install a package?
pip3 install package
To use a package in your script, or a method in the package
import packageName as pN
How do you use function1 from imported package?
package.function1()
How do you import just function1 from package
from package import function1
how do you import a subpackage
import package.subpackage