minmax.py

# Example file for Advanced Python: Working With Data by Joe Marini
# Demonstrates the usage of the min and max functions
import json


# Declare an array with some sample data in it
values = [3.0, 2.5, 5.1, 4.1, 1.8, 1.6, 2.2, 5.7, 6.1]
strings = ["one", "three", "five", "seven", "eleven", "eighteen"]


# TODO: The min() function finds the minimum value
#print(f"The minimum value is: {min(values)}")
#print(f"The minimum value is: {min(strings)}")

# TODO: The max() function finds the maximum value
#print(f"The maximum value is: {max(values)}")
#print(f"The maximum value is: {max(strings)}")

# TODO: define a custom "key" function to extract a data field
#print(f"The minimum value is: {min(values, key=len)}")
#print(f"The minimum value is: {max(strings, key=len)}")

# TODO: open the data file and load the JSON
with open("/workspaces/advanced-python-working-with-data-4312001/30DayQuakes.json", "r") as datafile:
   data = json.load(datafile)

print(data["metadata"]["title"])
print(len(data["features"]))

def getmag(dataitem):
    magnitude = dataitem["properties"]["mag"]
    if (magnitude is None):
        magnitude = 0
    return float(magnitude)

print(min(data["features"], key=getmag))
print(max(data["features"], key=getmag))