# No points in Programming Assignment: Data Validation

Could you help me solve the first exercise of the final exam of Programming Assignment: Data Validation, I don’t have the slightest idea why it doesn’t give me any points, this is my code, as I understand in Exercise 1: Generate Training Statistics, I must generate the expected value below with this data set train_stats = tfdv.generate_statistics_from_dataframe(train_df, stats_options) right?

this is my code:

``````### START CODE HERE
train_stats = tfdv.generate_statistics_from_dataframe(train_df, stats_options)

# Assuming you have already generated the statistics and stored them in the 'train_stats' variable

# Get the number of features used
num_features = len(train_stats.datasets[0].features)

# Get the number of examples used
num_examples = train_stats.datasets[0].num_examples

# Get the first feature
first_feature = train_stats.datasets[0].features[0].path.step[0]

# Get the last feature
last_feature = train_stats.datasets[0].features[-1].path.step[0]

# Print the extracted information
print("Number of features used:", num_features)
print("Number of examples used:", num_examples)
print("First feature:", first_feature)
print("Last feature:", last_feature)

### END CODE HERE
``````

I’m not a mentor for that course, so I don’t have specific guidance.

But the next piece of information you need is the grader feedback for each assignment where you got 0 points.

You can get this by clicking on the > icon on each row, and read the grader feedback text.

If you post screen capture images of that text, it will help others assist you.

Just to crosscheck, where you able to fix your issue.

Do not hesitate to post again.

Br.
@saou_a