39 lines
931 B
Markdown
39 lines
931 B
Markdown
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---
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title: Python Ternary Operater
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localeTitle: Python三元歌剧
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---
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# Python中的三元运算符
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Python中的三元操作（通常也称为条件表达式）允许程序员执行评估并根据给定条件的真实性返回值。
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三元运算符与标准`if` ， `else` ， `elif`结构的区别在于它不是控制流结构，并且在Python语言中表现得更像其他运算符，例如`==`或`!=` 。
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### 例
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在此示例中，如果`val`变量为偶数，则返回字符串`Even` ，否则返回字符串`Odd` 。然后将返回的字符串分配给`is_even`变量并打印到控制台。
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#### 输入
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```python
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for val in range(1, 11):
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is_even = "Even" if val % 2 == 0 else "Odd"
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print(val, is_even, sep=' = ')
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```
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#### 产量
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```
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1 = Odd
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2 = Even
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3 = Odd
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4 = Even
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5 = Odd
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6 = Even
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7 = Odd
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8 = Even
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9 = Odd
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10 = Even
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```
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### 来源
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https://docs.python.org/2.5/whatsnew/pep-308.html
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