# import necessary libraries
import pandas as pd

# read CSV file using read_csv()
df = pd.read_csv("https://tinyurl.com/CSVBostonHousing")

# view first few datatypes
print('Original Datatypes:')
print(df.dtypes[:3])

# change the datatype whilst importing by using dtype arg
df = pd.read_csv("https://tinyurl.com/CSVBostonHousing",
                 dtype={'crim':str, 'zn':str})

# view first few datatypes
print('\nChanged Datatypes Using dtypes:')
print(df.dtypes[:3])