สำรวจชุดข้อมูล Jobs

# Read in jobs file
jobs = ____

# Print first five lines of your DataFrame
print(jobs.head(5))

# Check the type of each column in your DataFrame
print(jobs.dtypes)

# Convert datestamp column to a datetime object
jobs[____] = ____(jobs[____])

# Set the datestamp columns as the index of your DataFrame
jobs = ____('datestamp')

# Check the number of missing values in each column
print(jobs.isnull().____())