Flashcards : Python Data Handling and Analysis Fundamentals — 24 cartes

Toutes les cartes

1Question

Data Types — definition?

Réponse

Categories of data that determine stored values.

2Question

Variables — role?

Réponse

Store data values during program execution.

3Question

Type Casting — mechanism?

Réponse

Converts data from one type to another.

4Question

Operators — symbols?

Réponse

Perform operations on variables and values.

5Question

Arithmetic Expressions — purpose?

Réponse

Evaluate to a single numerical value.

6Question

Escape Sequences — use?

Réponse

Insert special characters in strings.

7Question

Escape Sequence — example?

Réponse

` ` for newline.

8Question

Variables — dynamic?

Réponse

Yes, their data types can change.

9Question

Input Function — returns?

Réponse

User input as a string.

10Question

Assignment Statement — syntax?

Réponse

`variable = value`.

11Question

Operator Precedence — effect?

Réponse

Determines evaluation order in expressions.

12Question

Type Casting — explicit?

Réponse

Manual conversion using functions like `int()`, `float()`.

13Question

Comments — start with?

Réponse

`#` in Python.

14Question

Running Scripts — methods?

Réponse

IDLE, terminal, REPL.

15Question

Built-In Functions — examples?

Réponse

`print()`, `input()`, `type()`.

16Question

User Modules — purpose?

Réponse

Organize and reuse code.

17Question

NumPy Array — core type?

Réponse

ndarray, multi-dimensional, efficient.

18Question

Array Creation — functions?

Réponse

`np.array()`, `np.zeros()`, `np.ones()`.

19Question

DataFrame — structure?

Réponse

Tabular data with labeled axes.

20Question

DataFrame — created from?

Réponse

Dictionaries, lists, external files.

21Question

NumPy Arrays — advantage?

Réponse

Fast, memory-efficient numerical computations.

22Question

Pandas DataFrames — key feature?

Réponse

Labeled, flexible tabular data structure.

23Question

Escape sequences — include?

Réponse

` `, ` `, `\`, `"`, `rd.

24Question

Variables — assign?

Réponse

Using `=` operator.

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1. What are data types in programming?

2. What is the escape sequence used in Python to insert a newline character in a string?

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