干货合集│最好用的 python 库都在这

import jieba
word = '伟大的中华人民共和国'
jieba.cut(word)jieba.lcut(word)

import jiebaimport numpy as npimport PIL.Image as Imagefrom wordcloud import WordCloud
def run(word_path, picture_path):    with open(word_path, 'r') as f:        word = f.read()
    cut_word = ' '.join(jieba.cut(word))    color_mask = np.array(Image.open(picture_path))
    word_cloud = WordCloud(        # 设置字体，不指定就会出现乱码        font_path='/System/Library/Fonts/PingFang.ttc',        # 设置背景色        background_color='white',        # 词云形状        mask=color_mask,        # 允许最大词汇        max_words=120,        # 最大号字体        max_font_size=2000    ).generate(cut_word)
    word_cloud.to_file('word_cloud.jpg')    im = word_cloud.to_image()    im.show()

from time import sleepfrom tqdm import tqdm
# 这里同样的，tqdm就是这个进度条最常用的一个方法# 里面存一个可迭代对象for i in tqdm(range(1, 500)):  # 模拟你的任务  sleep(0.01)sleep(0.5)

import prettytable as pt
# 按行添加数据tb = pt.PrettyTable()tb.field_names = ['name', 'age', 'height', 'weight']tb.add_row(['亮仔', 25, 174, 65])tb.add_row(['程序员', 23, 164, 55])tb.add_row(['程序员亮仔', 27, 184, 69.5])
print(tb)
# +-----------+-----+--------+--------+# |    name   | age | height | weight |# +-----------+-----+--------+--------+# |     亮仔    |  25 |  174  |   65  |# |    程序员   |  23 |  164   |   55  |# |  程序员亮仔  |  27 |  184   |  69.5 |# +-----------+-----+--------+--------+

from multiprocessing import Process
def func(s):  print(s)
if __name__ == '__main__':  process = [  	Process(target=func, args=('1', ))    Process(target=func, args=('2', ))  ]    [p.start() for p in process]  [p.join() for p in process]

import threading
def func(s):  print(s)
if __name__ == '__main__':  thread = [  	threading.Thread(target=func, args=('1', ))    threading.Thread(target=func, args=('2', ))  ]    [t.start() for t in thread]  [t.join() for t in thread]

from googletrans import Translator
translator = Translator()# 未提供源语言以及翻译的最终语言,会自动翻译成英文translator.translate('안녕하세요.')# 告诉它翻译成什么语言translator.translate('안녕하세요.', dest='ja')# 告诉它源语言是什么translator.translate('程序员亮仔', src='zh-cn')
# 语言检测t = ttranslator.detect('이 문장은 한글로 쓰여졌습니다.')t.lang

from retrying import retry
@retry(stop_max_attempt_number=5)def say():  try:    cxyliangzai  except Exception as e:    # 可以将错误记录日志    print(e)    raise    say()

import pygame, sysfrom pygame.locals import * # 初始化pygamepygame.init() # 设置窗口的大小，单位为像素screen = pygame.display.set_mode((500,400), 0, 32) # 设置窗口的标题pygame.display.set_caption('用户事件监控') # 设置背景screen.fill((255, 255, 255)) # 程序主循环while True:  # 获取事件  for event in pygame.event.get():    # 判断事件是否为退出事件    if event.type == QUIT:      # 退出pygame      pygame.quit()      # 退出系统      sys.exit()          # 获得键盘按下的事件      if event.type == KEYDOWN:      if(event.key==K_UP or event.key==K_w):        print("上")      if(event.key==K_DOWN or event.key==K_s):        print("下")      if(event.key==K_LEFT or event.key==K_a):        print("左")      if(event.key==K_RIGHT or event.key==K_d):        print("右")      # 按下键盘的Esc键退出      if(event.key==K_ESCAPE):        # 退出pygame        pygame.quit()        # 退出系统        sys.exit()     # 获得鼠标当前的位置      if event.type ==MOUSEMOTION:      print(event.pos)     # 获得鼠标按下的位置    if event.type ==MOUSEBUTTONDOWN:      print("鼠标按下：", event.pos)     # 获得鼠标抬起的位置    if event.type ==MOUSEBUTTONUP:      print("鼠标抬起：", event.pos)    # 绘制屏幕内容  pygame.display.update()

from turtle import *
colors = ['red', 'purple', 'blue', 'green', 'yellow', 'orange']for x in range(360):    pencolor(colors[x % 6])    width(x / 100 + 1)    forward(x)    left(59)

import pandas as pd
info = pd.read_csv("students.csv", encoding = "utf-8")
# 查看数据框的一些属性：最大、最小、均值、四分位数等info.describe()
# 空值相关的操作pin = info["pin"]pin_isnull = pd.isnull(pin) pin_isnull_list = info[pin_isnull] len(pin_isnull_list)
# 缺失值相关操作, 简单的处理办法就是过滤掉null值books = info["life_cycle_books"]book_isnull = pd.isnull(books)book_list_isnull = info["life_cycle_books"][book_isnull == False]mean = sum(book_list_isnull) / len(book_list_isnull)# 删除缺失值, 所有行na_info = info.dropna(axis = 1)# 删除缺失值, 可以指定列na_info = info.dropna(axis = 0, subset = ["age", "name"])

from Crypto.Hash import SHA256
hash = SHA256.new()hash.update('Hello, World!')# 使用digest()方法加密digest = hash.digest()# 使用hexdigest（）方法加密，该方法加密后是16进制的hexdigest = hash.hexdigest()
print(digest, hexdigest)

import win32apiimport win32con
hid = win32gui.WindowFromPoint((100, 100))# 获取窗口标题title = win32gui.GetWindowText(hid)# 获取窗口类名class_name = win32gui.GetClassName(hid)
# 模拟鼠标在(400, 500)位置进行点击操作point = (400, 500)win32api.SetCursorPos(point)win32api.mouse_event(win32con.MOUSEEVENTF_LEFTDOWN, 0, 0)win32api.mouse_event(win32con.MOUSEEVENTF_LEFTUP, 0, 0)

from selenium import webdriverfrom selenium.webdriver import ActionChainsfrom selenium.webdriver.common.by import Byfrom selenium.webdriver.support.wait import WebDriverWaitfrom selenium.webdriver.support import expected_conditions as EC # 初始化谷歌浏览器driver = webdriver.Chrome() # 最大化窗口driver.maximize_window() # 打开头条登陆网址driver.get('https://sso.toutiao.com') # 等待某个元素是否出现WebDriverWait(self.driver, 10).until(    EC.text_to_be_present_in_element((By.XPATH, '//*[@id="mobile-code-get"]/span'), u'发送')) # 实例化鼠标操作action = ActionChains(self.driver) # 按住滑块action.click_and_hold(self.driver.find_element_by_xpath('//*[@id="captcha_container"]')).perform() # 将滑块移动x的距离action.move_by_offset(xoffset=x, yoffset=0).perform() # 释放滑块action.release().perform()

import mp3play
clip = mp3play.load('music.mp3')clip.play()

from bs4 import BeautifulSoup
soup = BeautifulSoup('<p class="name nickname user"><b>i am cxyliangzai</b></p>', 'html.parser')
#获取整个p标签的html代码print(soup.p)#获取b标签print(soup.p.b)#获取p标签内容，使用NavigableString类中的string、text、get_text()print(soup.p.text)#返回一个字典，里面是多有属性和值print(soup.p.attrs)#查看返回的数据类型print(type(soup.p))#根据属性，获取标签的属性值，返回值为列表print(soup.p['class'])#给class属性赋值,此时属性值由列表转换为字符串soup.p['class']=['Web','Site']print(soup.p)

import logging
logging.basicConfig(filename='logging.text', level=logging.DEBUG)logging.debug('It is a debug')logging.info('It is a  info')logging.warning('It is a  warning')

from PIL import Image
im = Image.open("picture.jpg")new_im = im.convert('L')print(new_im.mode)new_im.show()

import yagmail
# 链接邮箱服务器yag = yagmail.SMTP( user='邮箱地址', password='登录密码', host='smtp.163.com')
# 邮箱正文contents = ['邮件第一行内容', '邮件第二行内容', '邮件第三行内容']
# 给用户发送邮件并添加多个附件yag.send(['目标邮箱地址1', '目标邮箱地址2', '目标邮箱地址3'], '邮件标题', contents, ['c://附件.pdf', 'c://picture.jpg'])

pyinstaller -F -w -p ./lib -i logo.ico main.py