If the items in a tuple are mutable, then you’ll be able to change them even if the tuple itself is immutable. In other words, the immutability of Python tuples refers to the references it directly holds. It doesn’t extend to the referenced objects themselves. In general, putting mutab...
Here's a fun project attempting to explain what exactly is happening under the hood for some counter-intuitive snippets and lesser-known features in Python.While some of the examples you see below may not be WTFs in the truest sense, but they'll reveal some of the interesting parts of ...
>>> 'a' * 20 is 'aaaaaaaaaaaaaaaaaaaa' True >>> 'a' * 21 is 'aaaaaaaaaaaaaaaaaaaaa' False很不可思议,对吧?💡 解释:上面这种特性是CPython的一种编译器优化技术(叫做字符串驻留技术)。就是如果将要创建的字符串在之前已经创建过并且驻留在了内存没有释放,那么CPython不会创建一个新的实例,...
> Even Python understands that love is complicated/连Python也知道爱是难言的 * > Yes, it exists!/是的, 它存在! > Inpinity/无限 * > Mangling time!修饰时间! * Section: Miscellaneous/杂项 > += is faster/更快的 += > Let's make a giant string!/来做个巨大的字符串吧! > Explicit type...
nodetypes: isVisible checks overrideVisibility stubs: catch more dict-like-objects; special case exclude for maya.precomp.precompmodule stubs: create dummy data objects when safe; better handling of builtins stubs: use static code analysis to decide whether to include a child module in a parent...
>>> a is b False >>> a, b = "wtf!", "wtf!" >>> a is b True3.>>> 'a' * 20 is 'aaaaaaaaaaaaaaaaaaaa' True >>> 'a' * 21 is 'aaaaaaaaaaaaaaaaaaaaa' False很好理解, 对吧?说明:这些行为是由于 Cpython 在编译优化时, 某些情况下会尝试使用已经存在的不可变对象而不是每次都...
即使你传入 0 作为参数,isMultiple(of:)依然可以工作,而且是代码更加简洁明了。 Escaping Raw Strings Swift 4.2使用转义符来表示字符串中的反斜杠和引号: letescape="You use escape sequences for\"quotes\"\\\"backslashes\"in Swift 4.2."letmultiline=""" ...
But sometimes, the outcomes of a Python snippet may not seem obvious at first sight.Here's a fun project attempting to explain what exactly is happening under the hood for some counter-intuitive snippets and lesser-known features in Python.While some of the examples you see below may not be...
A small package of basic data structures and algorithms; currently focusing on BinaryTrees and structures that utilize BinaryTrees. This is very much in development, but please take a look at the README.md and tell me what you think - bondeje/dtlib
next_class] is None: self.send_individual(next_node, next_individual) @@ -65,7 +65,8 @@ def find_next_event_date(self): def have_event(self): """ Send new arrival to relevent node. Finds a batch size. Creates that many Individuals and send them to the relevent node. Then ...