Python 函数注释写法

def testDef(x:int, y: "string"="test") -> "return information":
    """There is a test for explain of function"""
    pass
print(testDef.__annotations__) # 打印函数注释
help(testDef)
"""
output:
{'x': <class 'int'>, 'y': 'string', 'return': 'return information'}
Help on function testDef in module __main__:

testDef(x: int, y: 'string' = 'test') -> 'return information'
    There is a test for explain of function
"""

Reference:

• Python3：给函数参数增加注释
• python函数注释