Blockchain enabled beast egg
if you want to extract one of the data, you can use e.iloc or e.loc
1. First, open pychar software, create a new Python file and import it into numpy library
b [1] is the second matrix
np.shape(np.ones(3))
Out[59]:(3,)
np.shape(np.ones(3).reshape((3,1)))
Out[62]:(3,1)
The following is the input method of array matrix based on Python 3.4:
1. Import numpy as NP
2. Arr = [1,2,3,4,5,6,7,8,9]
3_ A = NP. Array (ARR) 2.
4. Manually define an empty array: arr = [], linked list array: a = [1,2, [1,2,3]]< *** p> Python is pure free software, and its source code and interpreter Cpython follow GPL (GNU generic public license) protocol [2]. Python syntax is simple and clear, one of the characteristics is to force the use of white space as statement indentation
Python has rich and powerful libraries. It is often nicknamed glue language, which can easily connect various moles (especially C / C + +) made in other languages. A common application is to use Python to quickly generate the prototype of the program (sometimes even the final interface of the program), and then rewrite the part with special requirements in [3] with more appropriate language, such as the graphics rendering mole in 3D games. If the performance requirements are particularly high, it can be rewritten with C / C + +, and then packaged as an extension class library that can be called by python. It should be noted that when you use the extended class library, you may need to consider the platform problem, and some may not provide cross platform implementation
On July 20, IEEE released the list of programming languages in 2017: Python ranked first