00e131977b4e2cbe134f8832f3fbac7940644586,beginner_source/hybrid_frontend/introduction_to_hybrid_frontend_tutorial.py,,,#,185

Before Change

filename = os.path.join("data", url.split("/")[-1])

// Download file if it doesn"t already exist
if not os.path.exists(filename):
    os.makedirs("data")
    print("Downloading...")
    wget.download(url, filename)
    print("Download complete!")
else:
    print("File exists, skipping download.")

// Print 10 random lines
with open(filename, "r") as datafile:
    lines = datafile.readlines()
    // Last line in file is empty, we"ll deal with this later
    lines = lines[:-1]

After Change

filename = "data/iris.data"

// Print 10 random lines
try:
    datafile = open(filename, "r")
except IOError:
    print("Cannot open data file: {}. Have you downloaded it yet?".format(filename))
    exit()
lines = datafile.readlines()
// Last line in file is empty, we"ll deal with this later
lines = lines[:-1]
random.shuffle(lines)

Instances