Python practice in Data Science
Browse the rooms before signing in. Opening a room requires an account and follows your existing access. Practice does not issue certificates.
Label Encoder
ML engineer unblocking a pipeline crash before the afternoon batch.
pandas-basics. Free room.
Mean or Median?
Data analyst with 3 minutes before a stakeholder call.
statistics. Free room.
Null Sweep
Data engineer racing a 9 a.m. stand-up after a broken ETL run.
cleaning. Free room.
Z-Score Flag
Data quality engineer running a pre-batch sanity check.
eda. Free room.
Accuracy and Precision
Data scientist filing a model card before a noon deadline.
evaluation. Account access required.
Correlation Shortlist
Data analyst building a feature shortlist before a 10 a.m. review.
eda. Account access required.
Imputation Policy
Feature engineer closing a batch window with 10 minutes left.
cleaning. Account access required.
Min-Max Scale
ML engineer normalising raw sensor data before model inference.
regression. Account access required.
Confusion Matrix From Scratch
On-call data scientist investigating suspicious recall numbers at 6 a.m.
evaluation. Account access required.
Euclidean K-Means Step
Data scientist updating stale customer-segment centroids before an executive demo.
unsupervised. Account access required.
Logistic Sigmoid Predict
Engineer fixing a broken fraud-model scoring script at 8:30 a.m.
classification. Account access required.
Simple Linear Fit
Ops analyst building a quick trend line before a noon pipeline review.
regression. Account access required.
F1 Macro
Data scientist computing per-class and macro-averaged F1 for a production audit.
evaluation. Account access required.
PCA Projection
Data scientist producing a 2-D embedding visualisation for a 4 p.m. presentation.
unsupervised. Account access required.
Ridge Regression
Data scientist preventing OLS explosion on a collinear feature set before a board report.
regression. Account access required.
Stratified Split
ML engineer rescuing a failing train/dev split 20 minutes before the next batch.
classification. Account access required.
Cross-Validation MSE
Data scientist running k-fold CV from scratch after the eval library goes down.
regression. Account access required.
End-to-End Scoring Run
Data scientist rebuilding a failed nightly scoring pipeline by 7 a.m. for a campaign launch.
cleaning, classification, evaluation, capstone. Account access required.
Gradient Descent Logistic
ML engineer reimplementing a missing training script before the 6 a.m. batch window.
classification. Account access required.
Pipeline Drift Detector
Data scientist triaging a red performance dashboard before the morning standby.
capstone. Account access required.