Create an array
You can use the NumPy package to create arrays. NumPy arrays are optimized for numerical analyses and contain only a single data type. To convert a list to an array, you can use the array() function from NumPy.
import numpy as np
a_list = [1, 2, 3, 4]
a_list
[1, 2, 3, 4]
an_array = np.array(a_list)
an_array
array([1, 2, 3, 4])
This exercise is part of the course
Introduction to Python for Finance
Exercise instructions
- Import
numpyusing the aliasnp. - Create
prices_arrayandearnings_arrayarrays from the listspricesandearnings, respectively.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Import numpy as np
____
# Lists
prices = [170.12, 93.29, 55.28, 145.30, 171.81, 59.50, 100.50]
earnings = [9.2, 5.31, 2.41, 5.91, 15.42, 2.51, 6.79]
# NumPy arrays
prices_array = ____
earnings_array = ____
# Print the arrays
print(prices_array)
print(earnings_array)