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Posted by Redus Hession on January 19, 2022 at 10:55am 0 Comments 0 Likes
지난해 사상 최대 매출을 낸 녹십자의 신용도가 상승세다. 국내시장 진출 덕분에 외형은 커져 가는데 과중한 연구개발비와 고정비 확대로 영업수익성이 떨어지고 있어서다. 설비투자에 따른 재무부담까지 불고 있어 단시간 신용도 개선이 쉽지 않을 것이란 전망이 대부분이다.
22일 증권업계의 말에 따르면 해외 신용평가사 중 두 곳인 연령대스신용평가는 이날 녹십자의 기업 http://www.thefreedictionary.com/프리랜서 신용등급을 종전 AA-에서 A+로 낮췄다. 한 단계 차이지만 채권시장에서 'AA급'과 'A급' 업체에 대한 대우는 확연히 달라진다. 기관투자가들이 'A급' 회사에 대한 투자를 비교적으로 하기힘든 측면이 있기 때문이다. 앞으로 녹십자의 자금조달 비용도 증가할 확률이…
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ContinuePython includes a large number of libraries that may be used to execute a variety of tasks. The libraries are organized into groups based on the task at hand. Python is a fantastic programming language that provides the ideal environment for doing various scientific and mathematical calculations. Numpy, a popular Python library, is an example of such a library. It's a Python-based open-source toolkit for conducting computations in the engineering and science domains.
The Numpy library and the Numpy array in Python will be the topic of this article.
Python Numpy library:
Different divisions of research and development have relied heavily on numerical data. It is the data that contains a wealth of information. Working with data is important to every scientific research. The library is one of the most useful Python packages for dealing with numerical data. The Numpy array can be used by inexperienced programmers as well as professional researchers working on industrial research or cutting-edge scientific research. Numpy libraries can be utilized by nearly everyone working in the field of data, whether they are beginners or expert users. Numpy's API can be used in SciPy, Pandas, scikit-learn, scikit-image, Matplotlib, and a number of other packages designed for scientific and data science applications.
Numpy is a Python package that contains multidimensional arrays and matrix data structures. The ndarray object is a homogenous array object provided by the library. In Python, the Numpy array has the shape of an n-dimensional array. There are also other methods in the library that can be used to execute operations on the array. The library may be used to execute a variety of mathematical operations on the array as well. Python can be enhanced with data structures that will allow for the efficient calculation of various matrices and arrays. The library also includes a number of mathematical functions that can be used to manipulate matrices and arrays.
Also read: List vs Dictionary
The library's installation and import are as follows:
A Python distribution of scientific origin should be used to install Numpy in Python. The library may be installed with the following command if the machine already has Python installed.
Numpy can be installed with Conda or by using the pip command.
Anaconda, which is one of the easiest ways to install Python, can be used if it hasn't been installed yet on the machine. Other libraries or packages, such as SciPy, Numpy, Scikit-learn, pandas, and others, do not need to be installed individually when installing Anaconda.
The command import Numpy as np can be used to import the Numpy library into Python.
The module includes numerous methods for quickly and efficiently creating arrays in Python. It also allows you to change the data within the arrays or modify the arrays themselves. The distinction between a list and a Numpy array in Python is that the data in a Python list can be of different data types, whereas the items in a Numpy array in Python should be homogeneous. Within the Numpy array, the items have the same data types. The mathematical functions that could be applied over the Numpy array would become inefficient if the elements in the Numpy array were of different data types.
Python Numpy Array
Within the Numpy library, the Numpy array is a centralized data structure. When an array is defined, it is made up of arrays that are arranged in a grid and hold raw data information. It also offers instructions on how to locate an element in an array and how to interpret an element in an array. The Numpy array is made up of grid elements that can be indexed in a variety of ways. The array's elements all have the same data type, hence they're referred to as array dtype.
The array's index is determined by a tuple of non-negative integers. Integers, Booleans, and other arrays can also be used to index it.
The dimension number of an array is used to determine its rank.
An array's form is defined as the set of numbers that specify the array's size in each dimension.
For high-dimensional data, a Python list with nested lists can be used to initialize the arrays.
Square brackets can be used to access the items of the array.
The indexing of the Numpy array always starts with 0, therefore when accessing the elements, the array's first element will be at the 0 positions. For instance, b[0] returns the first entry in the array b.
Also Read: 6 Ways to Square a Number in Python
The following are the basic operations on the Numpy array:
In Python, the function np.array() is used to create a Numpy array. The user must first generate an array before passing it to a list. In the list, the user can also specify the data type.
In Python, the function np.sort() can be used to sort a Numpy array. When the function is invoked, the user can define the kind, axis, and order.
Users can use ndarray.ndim to retrieve information about the array's dimensions or axis number. Using ndarray.size also informs the user of the total number of elements in the array.
The commands ndarray.ndim, ndarray.shape, and ndarray.size can be used to determine the form and size of a Numpy array. The command ndarray.ndim is used to gain an idea of the array's dimensions or the number of axes of an array.
The command ndarray.size is used to obtain information about the total number of elements present in the array. The ndarray.shape command returns a collection of integers showing the element number stored along each of the array's dimensions.
Arrays in Numpy can be indexed and sliced in the same manner that lists in Python can.
The sign "+" can be used to join two arrays together. Additionally, the sum() function can be used to return the sum of all the entries in an array. The function can be applied to arrays with one, two, or even three dimensions.
Operations can be carried out over arrays of various forms using the idea of broadcasting in a Numpy array. The array dimensions, on the other hand, must be compatible; otherwise, the program will throw a ValueError.
Aside from sum(), the Numpy array includes functions such as mean for calculating the average of the elements, prod for calculating the product of the array's elements, and std for calculating the standard deviation of the error's members.
The Numpy array can be passed a list of lists. To create a 2-D array, a list of lists can be given.
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