slice(start, stop[, step]):切片操作,通常的使用表达式的方式,比如:a[start:stop:step] 。 sorted(iterable[, key][, reverse]):根据iterable对象生成一个新的已排序迭代器对象。 staticmethod(function):返回一个静态方法。 str(object=b'', encoding='utf-8', errors='strict'):返回一个str对象。 sum(...
3. eval()仅支持有效的表达式求值并返回计算结果 2.21 filter(function, iterable): 类似表达式的过滤。比列表推导式省内存 1. 如果function不是None,等效于生成器表达式,比列表推导式省内存 2. 如果function是None,等效于列表推导式 f = filter(None,shares) # 函数为None,类似列表推导式,循环打印出每一个值 p...
property(fget=None, fset=None, fdel=None, doc=None)如果使用装饰器形式使用,如针对x使用了@property,要在fset上加@x.setter 在fdel上加@x.deleter raw_input() 从标准输入获取值 作为str返回 去掉输入的回车符 input = eval(raw_input()) range reduce(function, iterable[, initializer]) repr reversed...
'heading','hideturtle','home','ht','inspect','isdown','isfile','isvisible','join','left','listen','lt','mainloop','math','mode','numinput','onclick','ondrag','onkey','onkeypress','onkeyrelease','onrelease','onscreen
input() open() print() eval() exec() compile() vars() locals() globals() callable() __import__() 参考:https://docs.python.org/3.5/library/functions.html print(abs(-1)) # 绝对值 1 print(divmod(5, 2)) # 取商和余数 (2, 1) ...
() function takes an input vector and two surface normals. If the dot product of the input vector and the second normal vector is negative, then it returns the first normal vector; otherwise, it returns the negative of the first normal vector. As you might have guessed from its name, ...
SQL FunctionTable FunctionDescription tableName.compositeType.field COMPOSITE.get(STRING) 通过名称从Flink复合类型(例如Tuple、POJO)中返回字段的值。 tableName.compositeType.* ANY.flatten() 返回Flink复合类型(例如Tuple、POJO)的扁平表示形式,将其每个直接子类型转换为单独的字段。大多数情况下,扁平表示形式的字段...
input() open() print() eval() exec() compile() vars() locals() globals() callable() __import__() 参考:https://docs.python.org/3.5/library/functions.html print(abs(-1)) # 绝对值 1print(divmod(5, 2)) # 取商和余数 (2, 1)# 四舍五入print(round(1.4)) # 1print(round(1.5)...
Input/output built-in functions Table 1. Input/output built-in functions
<function func at 0x0000002D3656D6A8> >>> func(5) 5 >>> 1.3. complie函数 compile(source, filename, mode, flags=0, dont_inherit=False, optimize=-1) Compile the source into a code or AST object. Code objects can be executed by exec() or eval(). source can either be a normal ...