1、判断元素存在

try:
    b= driver.find_elements_by_name("XXX")
except:
    print "xxx不存在啊"

2、下拉刷新

def refresh_page(driver)

x = driver.get_window_size()['width']
y = driver.get_window_size()['height']
sx = x * 0.35
sy = y * 0.45
ex = 0
ey = y * 0.75
driver.swipe(sx, sy, ex, ey,1000)

3、获取adb日志

def get_adblog(adb_log_path)

     #this_date= datetime.datetime.today().strftime("%Y_%m_%d_%H_%M_%S")
    #adb_log_path="./"+this_date+'adb.log'
    with open(adb_log_path, 'w') as f:
    order='adb logcat '
    poplog=subprocess.Popen(order, stdout=f)