Operators

21 articles
Interview Preparation Intermediate

7.18 Interview Questions

Conceptual Questions What is the difference between == and is? What is short-circuit evaluation, and why does it matter? Explain operator …

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Interview Preparation Beginner

7.17 Best Practices

Readable Expressions Favor clarity over compactness — an expression that takes an extra half-second to parse mentally, multiplied across …

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Interview Preparation Intermediate

7.16 DevOps Use Cases

Operators are the backbone of every monitoring/validation script — these five patterns cover most of what shows up in practice. CPU/Disk …

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Interview Preparation Intermediate

7.15 Performance Considerations

Efficient Expressions Prefer x in a_set over x in a_list for repeated membership checks on large collections (see 7.7 Membership Operators) …

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Interview Preparation Intermediate

7.14 Common Mistakes

Using is Instead of == What Goes Wrong? is compares identity, not value — it can appear to work for small integers or short strings, due to …

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Interview Preparation Intermediate

7.12 Chained Comparisons

Syntax Python allows writing a < b < c directly, unlike languages where you’d need (a < b) and (b < c) explicitly. …

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Interview Preparation Beginner

7.10 Boolean Evaluation

What Is It? Python treats every value as either “truthy” or “falsy” in a boolean context (if x:, while x:, bool(x)) …

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Interview Preparation Intermediate

7.8 Identity Operators

This section covers is/is not specifically as comparison operators. The underlying concept — a variable being a reference to an object, not …

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Interview Preparation Beginner

7.7 Membership Operators

in What Is It? Tests whether a value exists within a collection (list, string, dict keys, and so on), returning a bool. >>> 3 in …

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Interview Preparation Intermediate

7.6 Bitwise Operators

What Are They? Operators that work on the individual bits of an integer’s binary representation, rather than its decimal value. Why …

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Interview Preparation Beginner

7.5 Logical Operators

flowchart TD subgraph AND["and — True only if BOTH are truthy"] direction LR A1["True and True → True"] A2["True and False → False"] …

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Interview Preparation Beginner

7.4 Comparison Operators

What Are They? Operators that compare two values and always return a bool. Why Are They Used? The foundation of every conditional (if, …

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Interview Preparation Beginner

7.3 Assignment Operators

= Plain assignment binds a name to a value — already covered in 4.8 Variables and 6.4 Assignment Operations. >>> x = 5 >>> …

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Interview Preparation Beginner

7.2 Arithmetic Operators

The standard mathematical operators, all usable on int and float (and some on other types, see 7.13 Operators with Different Data Types). …

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Interview Preparation Beginner

7.1 Introduction to Operators

flowchart TD O["Operators"] O --> AR["Arithmetic\n+ - * / // % **"] O --> AS["Assignment\n= += -= ..."] O --> CO["Comparison\n== != < > <= >="] …

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Interview Preparation Beginner

Operators

Arithmetic Operators A=10 B=3 echo $((A + B)) # 13 echo $((A - B)) # 7 echo $((A * B)) # 30 echo $((A / B)) # 3 — integer division, no …

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