本篇内容主要讲解“Python最常用的包有哪些”,感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷,实用性强。下面就让小编来带大家学习“Python最常用的包有哪些”吧!
numpy(数据处理和科学计算)
代码示例:
arr = np.array([1, 2, 3, 4, 5])print(arr)
pandas(数据处理和分析)
代码示例:
data = {'name': ['John', 'Bob', 'Alice'], 'age': [20, 35, 25]}df = pd.DataFrame(data)print(df)
matplotlib(数据可视化)
代码示例:
import matplotlib.pyplot as pltx = [1, 2, 3, 4, 5]y = [4, 2, 7, 5, 9]plt.plot(x, y)plt.show()
scikit-learn(机器学习工具)
代码示例:
from sklearn.linear_model import LinearRegressionX = [[1, 4], [2, 5], [3, 6]]y = [8, 10, 12]model = LinearRegression().fit(X, y)print(model.predict([[4, 7]]))
tensorflow(深度学习框架)
代码示例:
import tensorflow as tfx = tf.constant([1, 2, 3, 4])y = tf.constant([5, 6, 7, 8])z = tf.add(x, y)sess = tf.Session()print(sess.run(z))
keras(深度学习框架)
代码示例:
from keras.models import Sequentialfrom keras.layers import Densemodel = Sequential()model.add(Dense(10, input_dim=5, activation='relu'))model.add(Dense(1, activation='sigmoid'))model.compile(loss='binary_crossentropy', optimizer='adam')
requests(HTTP 库)
代码示例:
import requestsresponse = requests.get('https://www.baidu.com')print(response.text)
flask(Web 框架)
代码示例:
from flask import Flask, render_templateapp = Flask(**name**)@app.route('/')def index():return render_template('index.html')if **name** == '**main**':app.run(debug=True)
scrapy(网络爬虫框架)
代码示例:
import scrapyclass MySpider(scrapy.Spider):name = 'myspider'start_urls = ['http://quotes.toscrape.com'] def parse(self, response): for quote in response.css('div.quote'): yield {'text': quote.css('span.text::text').get(), 'author': quote.css('span small::text').get()}
beautifulsoup(HTML 解析器)
代码示例:
from bs4 import BeautifulSouphtml = '<html><head><title>这是标题</title></head><body><p>这是一个段落。</p ></body></html>'soup = BeautifulSoup(html, 'html.parser')print(soup.title.text)
selenium(Web 自动化测试)
代码示例:
from selenium import webdriverdriver = webdriver.Chrome()driver.get('https://www.baidu.com')search_box = driver.find_element_by_name('wd')search_box.send_keys('Python')search_box.submit()
ctypes(调用 C 语言库)
代码示例:
import ctypeslib = ctypes.cdll.LoadLibrary('libexample.so')lib.add(1, 2)
wxPython(GUI 开发)
代码示例:
import wxapp = wx.App()frame = wx.Frame(None, title='Hello, wxPython!')frame.Show()app.MainLoop()
pillow(图像处理)
代码示例:
from PIL import Imageim = Image.open('test.jpg')im.show()
openpyxl(处理 Excel 文件)
代码示例:
import openpyxlwb = openpyxl.load_workbook('example.xlsx')sheet = wb['Sheet1']cell = sheet['A1']print(cell.value)
nltk(自然语言处理)
代码示例:
import nltksent = ‘This is a sentence.'tokens = nltk.word_tokenize(sent)print(tokens)
jieba(中文分词)
代码示例:
import jiebatext = '我爱中文分词'words = jieba.cut(text)for word in words:print(word)
re(正则表达式)
代码示例:
import retext = 'The quick brown fox jumps over the lazy dog.'pattern = re.compile('fox')print(pattern.findall(text))
datetime(日期时间处理)
代码示例:
import datetimedt = datetime.datetime.now()print(dt)
random(随机数生成)
代码示例:
import randomprint(random.randint(1, 10))
到此,相信大家对“Python最常用的包有哪些”有了更深的了解,不妨来实际操作一番吧!这里是编程网网站,更多相关内容可以进入相关频道进行查询,关注我们,继续学习!