Methods and packages

Python for MATLAB Users

Justin Kiggins

Product Manager

Methods are functions attached to variables

Specific to the variable type
Accessed with a period

yelling = "WHY ARE YOU YELLING?"
whispering = yelling.lower()
print(whispering)

why are you yelling?

The .format() method

n_avocados = 1765
message = "I have {} avocados!".format(n_avocados)

print(message)

I have 1765 avocados!

Python packages

NumPy Logo

matplotlib logo

pandas logo

import math

math.pi

3.141592653589793

math.log(0.9)

-0.10536051565782628

Importing part of a package:

from math import log
log(0.9)

-0.10536051565782628

Package aliasing

import datetime as dt

birth_date = dt.datetime(1961,8,4)

# Import NumPy package with common alias
import numpy as np
x = np.ndarray([1, 2, 3])

# Import pandas package with common alias
import pandas as pd
df = pd.DataFrame()

# Import Matplotlib pyplot module with common alias
import matplotlib.pyplot as plt
plt.show()

# Import Seaborn package with common alias
import seaborn as sns
sns.set()

Let's explore some useful methods and packages

Python for MATLAB Users