What are the common flow control structures in Python?
In Python, the flow control structure is an important tool used to determine the execution order of the program. They allow us to execute different blocks of code based on different conditions, or to execute a block of code repeatedly. The following will introduce common process control structures in Python and provide corresponding code examples.
Conditional statements (if-else):
Conditional statements allow us to execute different code blocks based on different conditions. Its basic syntax is:
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Sample code:
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Output result:
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2.1 for loop:
The for loop is used to traverse each element in an iterable object (such as a list, string, etc.) and execute the corresponding code block. Its basic syntax is:
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Sample code:
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Output result:
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2.2 while loop:
The while loop is used to repeatedly execute a piece of code. until the condition no longer holds true. Its basic syntax is:
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Sample code:
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Output result:
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3.1 break statement:
The break statement is used to terminate the loop and jump out of the loop body. It can be used anywhere within a loop to terminate the loop early. Sample code:
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Output result:
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3.2 continue statement:
The continue statement is used to terminate the current iteration and jump to the next iteration. It can be used anywhere within a loop to skip certain code. Sample code:
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Output result:
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3.3 return statement:
The return statement is used in functions to return the execution result of the function and end the execution of the function. It can also be used to break out of loops. Sample code:
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Output result:
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The above are the common process control structures in Python. Through conditional statements, loop statements and jump statements, we can flexibly control the execution flow of the program. , making it more in line with our needs.
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