Base Python

Basics

• help: function_name?
• print
  • new line: \n
• Addition: 3+5
• Concatenate Strings: "hello" + " " + "world"
• List: x = [3, 4, 5]
  • Can't add lists of umbers using x + y

For Loops

for x in []:
	~stuff~

• += increment

total = 0
for value, weight in zip([2,3,19],[0.2,0.3,0.5]):
    total += weight * value
print('Weighted average is: {0}'.format(total))

• zip() loops over sequences of tuples
• The reference docs.python.org/3/library/string.html includes many helpful and more complex string formatting examples

The function dir() provides a list of objects in a namespace. When used with an object, it includes attributes and any methods associated with the object.

Defining Functions

there is already a function for plotting lines, this is just reference for defining functions

def abline(ax, b, m, *args, **kwargs):
    "Add a line with slope m and intercept b to ax"
    xlim = ax.get_xlim()
    ylim = [m * xlim[0] + b, m * xlim[1] + b]
    ax.plot(xlim, ylim, *args, **kwargs)

• *args allows any number of non-named arguments to abline, while *kwargs allows any number of named arguments (such as linewidth=3) to abline
• 4. More Control Flow Tools — Python 3.12.4 documentation