DC Introduction to Python - Python Basics

#	DC Introduction to Python
	DC Introduction to Python - Python Basics
	DC Introduction to Python - Python Lists
	DC Introduction to Python - Functions and Packages
	DC Introduction to Python - NumPy

1 The Python Interface

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=2

# Example, do not modify!
print(5 / 8)

# Print the sum of 7 and 10
print(7 + 10)

2 Any comments?

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=4

# Division
print(5 / 8)

# Addition
print(7 + 10)

3 Python as a calculator

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=5

# Addition, subtraction
print(5 + 5)
print(5 - 5)

# Multiplication, division, modulo, and exponentiation
print(3 * 5)
print(10 / 2)
print(18 % 7)
print(4 ** 2)

# How much is your $100 worth after 7 years?
print(100 * 1.1 ** 7)

4 Variable Assignment

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=7

# Create a variable savings
savings = 100

# Print out savings
print(savings)

5 Calculations with variables

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=8

# Create a variable savings
savings = 100

# Create a variable growth_multiplier
growth_multiplier = 1.1

# Calculate result
result = savings * growth_multiplier ** 7

# Print out result
print(result)

6 Other variable types

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=9

# Create a variable desc
desc = "compound interest"

# Create a variable profitable
profitable = True

7 Operations with other types

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=11

savings = 100
growth_multiplier = 1.1
desc = "compound interest"

# Assign product of growth_multiplier and savings to year1
year1 = savings * growth_multiplier

# Print the type of year1
print(type(year1))

# Assign sum of desc and desc to doubledesc
doubledesc = desc + desc

# Print out doubledesc
print(doubledesc)

8 Type conversion

• https://campus.datacamp.com/courses/intro-to-python-for-data-science/chapter-1-python-basics?ex=12

# Definition of savings and result
savings = 100
result = 100 * 1.10 ** 7

# Fix the printout
print("I started with $" + str(savings) + " and now have $" + str(result) + ". Awesome!")

# Definition of pi_string
pi_string = "3.1415926"

# Convert pi_string into float: pi_float
pi_float = float(pi_string)