Difference Between Expression And Statement In Python
Understanding the Distinction between Expression and Statement in Python
Difference Between Expression And Statement In Python
In Python, expressions are units of code that produce a value, while statements are larger units of code that perform actions or make something happen. Expressions can be as simple as a single variable or value, or more complex combinations of variables, operators, and function calls. They always return a value when evaluated. On the other hand, statements do not return a value and are used to control the flow of the code, such as loops, conditionals, and function definitions. In short, expressions are evaluated to produce values, while statements are executed to perform actions.
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1 - In Python, an expression is a piece of code that produces a value, while a statement is a piece of code that performs an action.
2) Expressions can be made up of variables, operators, and literals, and they can be part of a statement.
3) Examples of expressions include arithmetic expressions like 2 + 3, function calls like len("hello"), and list comprehensions like [x*2 for x in range(5)].
4) Statements, on the other hand, include assignments, loops, conditionals, and function definitions. They are used to control the flow of a program and perform operations.
5) In Python, expressions can be nested within statements, but statements cannot be nested within expressions.
6) Expressions can be used anywhere a value is expected, such as in assignments, function arguments, and as part of larger expressions.
7) Statements, on the other hand, cannot be used where an expression is expected. For example, you cannot use an if statement as the argument to a function.
8) Another key difference between expressions and statements is that expressions have a return value, while statements do not. This means that expressions can be used to compute a value and assign it to a variable.
9) Understanding the difference between expressions and statements is important in writing clean and concise Python code, as it helps you structure your code logically and efficiently.
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