KwickClips Python · 41 sec · free
Why does 88 become 88.0 in a DataFrame?
Short answer. The other row is missing a value, so pandas fills NaN and the column goes decimal.
In a dictionary of lists, what do the keys become?
The column names.
Remember
| Dict of lists: key = column |
| Dict of Series: labels match |
| List of dicts: one per row |
Why did eighty eight become eighty eight point zero? Each dictionary in r is one row. The empty one gives N a N, so the column goes decimal. Dictionary of lists: keys are columns. Series: labels match. List of dictionaries: a row each.
This clip is from the full lesson: Pandas DataFrame: Create, Access and Modify — 6 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 12 Informatics Practices (065), CBSE Class 12 Informatics Practices (065), CBSE Class 12 Informatics Practices (065), CBSE Class 12 Informatics Practices (065)
More KwickClips from this lesson
What is a DataFrame?39 sec
Why does drop() seem to do nothing?41 sec
What is the difference between loc and iloc?42 sec
How do you loop over DataFrame rows?38 secDisclaimer. KwickAcademy is free study material for general learning and revision. Parts of it, including the voice-over, are produced with the help of AI tools and may contain errors; if you spot one, please tell us and we will correct it. Syllabus, marks and exam details follow the latest official board publications available to us, and boards can change them at any time, so always confirm against your board's official website and your school. Using this material does not guarantee any marks or result. Board names and trademarks belong to their owners; Kwickprep is not affiliated with or endorsed by any examination board. We never ask for passwords, OTPs or ID numbers. Your progress is saved only in this browser. Full disclaimer · Privacy

