selenium.模拟键盘操作（Keys）

Keys源码：

    NULL = '\ue000'
    CANCEL = '\ue001'            # ^break
    HELP = '\ue002'
    BACKSPACE = '\ue003'
    BACK_SPACE = BACKSPACE       #删除键
    TAB = '\ue004'               #TAB键
    CLEAR = '\ue005'  
    RETURN = '\ue006'
    ENTER = '\ue007'             #回车键
    SHIFT = '\ue008'             #Shift键
    LEFT_SHIFT = SHIFT
    CONTROL = '\ue009'
    LEFT_CONTROL = CONTROL       #Ctrl 键
    ALT = '\ue00a'               #Alt 键
    LEFT_ALT = ALT
    PAUSE = '\ue00b'
    ESCAPE = '\ue00c'            #ECS键
    SPACE = '\ue00d'             #空格键 
    PAGE_UP = '\ue00e'           #PgUp 键
    PAGE_DOWN = '\ue00f'         #PgDwon 键
    END = '\ue010'               #END 键
    HOME = '\ue011'              #HOME 键
    LEFT = '\ue012'              #左键
    ARROW_LEFT = LEFT  
    UP = '\ue013'                #上键
    ARROW_UP = UP   
    RIGHT = '\ue014'
    ARROW_RIGHT = RIGHT          #右键
    DOWN = '\ue015'              #下键
    ARROW_DOWN = DOWN  
    INSERT = '\ue016'            #insert键 
    DELETE = '\ue017'            #del键

    SEMICOLON = '\ue018'         #';'键
    EQUALS = '\ue019'            #'='键


　　#数字键盘
    NUMPAD0 = '\ue01a'           # number pad keys
    NUMPAD1 = '\ue01b'
    NUMPAD2 = '\ue01c'
    NUMPAD3 = '\ue01d'
    NUMPAD4 = '\ue01e'
    NUMPAD5 = '\ue01f'
    NUMPAD6 = '\ue020'
    NUMPAD7 = '\ue021'
    NUMPAD8 = '\ue022'
    NUMPAD9 = '\ue023'
    MULTIPLY = '\ue024'          # '*' 键
    ADD = '\ue025'               # '+' 键
    SEPARATOR = '\ue026'         #','键
    SUBTRACT = '\ue027'          # '-' 键
    DECIMAL = '\ue028'           # '.'键
    DIVIDE = '\ue029'            #'/'键

    F1 = '\ue031'                # function  keys
    F2 = '\ue032'
    F3 = '\ue033'
    F4 = '\ue034'
    F5 = '\ue035'
    F6 = '\ue036'
    F7 = '\ue037'
    F8 = '\ue038'
    F9 = '\ue039'
    F10 = '\ue03a'
    F11 = '\ue03b'
    F12 = '\ue03c'

    META = '\ue03d'
    COMMAND = '\ue03d'

组合键：

send_keys(Keys.BACK_SPACE)   删除键（BackSpace） 
send_keys(Keys.SPACE)        空格键(Space) 
send_keys(Keys.TAB)          制表键(Tab) 
send_keys(Keys.ESCAPE)       回退键（Esc） 
send_keys(Keys.ENTER)        回车键（Enter） 
send_keys(Keys.CONTROL,'a')  全选（Ctrl+A） 
send_keys(Keys.CONTROL,'c')  复制（Ctrl+C）
send_keys(Keys.CONTROL,'v')  粘贴（Ctrl+V）
send_keys(Keys.CONTROL,'x')  剪切（Ctrl+X）

非组合键：

Keys.ENTER           回车键 
Keys.BACK_SPACE      删除键 
Keys.SPACE           空格键
Keys.TAB             制表键 
Keys.ESCAPE          回退键 
Keys.F5              刷新键

百度首页做个练习，效果如GIF：

from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.keys import Keys
from selenium import webdriver
from time import sleep

driver = webdriver.Chrome()
action = ActionChains(driver)
driver.get('https://www.baidu.com')

mov = driver.find_element_by_link_text('设置')
action.move_to_element(mov).perform()
sleep(1)
action.move_to_element_with_offset(mov, 0, 60).click().perform()

sleep(1)
input01 = driver.find_element_by_xpath('//*[@id="adv_keyword"]')
input02 = driver.find_element_by_xpath('//*[@id="adv-setting-2"]/input')
input03 = driver.find_element_by_xpath('//*[@id="adv-setting-3"]/input')
input04 = driver.find_element_by_xpath('//*[@id="advanced"]/div/form/div/table/tbody/tr[4]/td[2]/input')

input01.send_keys("云想衣裳花想容")
sleep(1)
input01.send_keys(Keys.CONTROL, 'a')
input01.send_keys(Keys.BACK_SPACE)
sleep(1)
input02.send_keys("云想衣裳花想容,春风拂槛露华浓。")
sleep(1)
input03.send_keys(Keys.TAB, "若非群玉山头见，会向瑶台月下逢。")
sleep(1)

driver.quit()