Python:

Too slow! list operations don't return the list, so you can't do list.append(4).append(5). (I mean a reference to the same list, not a copy). This is a minor gripe; it's only come up a few times. statements don't return values (if, print, while, for, etc). This is only a problem when dealing with lambdas. lambdas can only be one expression. There's no real need for this restriction, as they are equivalent to functions in every other way. What if I want a button press event which calls two functions? I'd need to create a named function to supply that functionality to an action listener, while doing "lambda: f1(); f2()" would not hurt. you can only put standard a-zA-Z_0-9 as names. Having functions like "true?" and "+" would be great. Of course, this could lead to terrible obfuscation, but I'm not saying we immediately rename all functions to "p@$%3". Which do you find clearer to read: "dec2bin" or "dec->bin"? ("store_results" or "storeResults") or "store-results"?

R (R- project for statistics)

糟糕透顶的字符串支撑 对于一些简单的描述任务，比如交叉表格，是非常困难的 大型数据集操作是在内存中完成的。

不得不假设我们有语言。我们做什么?

objective - c 2.0

严格遵循语言和运行时，而不是库，并且没有任何特定的顺序:

Lack of cVars. No modules. I'm not terribly unhappy with a lack of namespaces, but modules would be nice to have. Ivar-based property syntax requires declarations using the variable name in 3 places. It's fairly hideous. C heritage. Anything to hate about the C language, except for OO and GC, is present. Objects can't live on the stack. Not a problem with Obj-C so much as what it does to programming practices in other languages. I find it strange when I get a return value on the stack in C++, for instance. If I'm not actually looking at the library documentation when I write the code, I'll assume that every function returns a pointer, which often makes for some siginificant cleanup later.

Python

那些我不理解的…

math.ceil() and math.floor() return floats, not integers (probably to avoid an integer overflow in the underlying C function - but why not cast to a Python long?) len() is a function not a method reload() is very limited, does not reload a module 9 times out of 10, only reloads an imported label if it is a module - i.e. cannot do from bar import foo; reload(foo) if foo is not itself a module Mutable default arguments have a single reference (why not a new instance each function call?!) All these underscored variables - if they are so private, how come we see inbuilt ones so much in code? Get a namespace! Strings are not mutable - maybe there is a good reason for this but I have come across many situations where I would like to tweak one particular character ...

那些基于实现有意义但令人讨厌的……

array.sort()不返回数组(我认为它发生在原地) 列表/生成器推导式不定义新的作用域(只是for循环的语法糖，对吗?)

以及几个在Python 3中修复的

默认为整数除法 Global只能引用顶级名称空间

Python

没有名称空间。 伪私有属性/名称混淆(主要使用getattr)。 文件路径操作分布在多个模块中。串在一起的os。路径调用是丑陋的，难以读取，并且在大多数情况下违反了DRY。常见的文件路径操作仍然没有方便的函数，比如获取目录下的文件列表。修复此问题的路径类型模块被拒绝。

([f for f in os.listdir('/file/path') if os.path.isfile(os.path. isfile)加入(/文件/路径,f))))

Python文档(我非常、非常、非常感谢有文档，而且它的格式很好，但我讨厌费力地在5000行快速入门使用示例中找到特定模块的单个函数文档(我正在查看optparse和logging))。内置类型在近10个不同的地方被零碎地记录。