Copy and Deepcopy in Python
与C++一样，Python中也存在浅拷贝（Copy）和深拷贝（Deepcopy）两种拷贝方式。然而，由于Python中的一切传递、赋值都是引用，其深浅拷贝也具有更为不同的特点。
Zip: Make Aggregation Easier
zip() aggregates elements from two or more iterables and return a iterator whose elements are tuples.
Gamma and Factorial
math.gamma() calculates generalized factorial.
Lambda: Anomymous Functions
An anonymous function in Python is the one that has no name when it is defined. In Python, the lambda keyword is used to define anonymous functions rather than the def keyword, which is used for normal functions.
Python Package
一些安装Python包的注意事项。
Splat
* and **
With: Context Managers
The with statement in Python is used for resource management and exception handling. It is commonly used when working with file streams. However, we can also create our own context manager classes or context manager functions.
Iterator & Generator in Python
The iterator and generator are important objects in Python.
Usage of Import Keyword in Python
Import is a keywords in python that is used to import modules. It is usually used with keywords from and as.
Namespace in Python
Namespaces are actually dictionaries in python which store the objects that compiler can access to and the mapping relationship between names and objects.