All our Data Science projects include bite-sized activities to test your knowledge and practice in an environment with constant feedback.
All our activities include solutions with explanations on how they work and why we chose them.
As soon as you turn on your lab, your bash will start in a given directory. What's the full path of that directory?
Assuming you're still in
/app, how many directories do you see in the current path? You can ignore
Count only the files with a
How many total lines does the file have? Considering header + data. Total number of lines.
data/Electricity1970.csv file contains "Cost Function of Electricity Producers in 1970" (see docs). The first column of the dataset is the ID of the sample.
What is the ID (numeric, integer) of the second to last row?
Create an empty directory named
my-data inside the
Create a file named
sales.csv inside the
my-data directory that you have previously created. The
sales.csv file should contain only one line:
.json file incorrectly located in the
scripts/ directory; move it back to the
data/ directory. Don't change it, and make sure you're MOVING it (that means, the file no longer will be located in the
Duplicate the file
data/Electricity1970.csv into the new file
Create a symlink in
/app that points to
data/Electricity1970.csv. The symlink should have the same name (
Electricity1970.csv) but be located in