如果我不使用交互式shell打开py程序，则会出现错误

Question

I 've a porgram called searchMachine.py that if I run it straight from IDLE (F5..)it works just fine, but If I run it by just clicking on searchMachine.py it works untill somepoint and then I get an error. See below. Thanks for any input you could give me. By the way, any idea how I can make this chrome work in silent? for example minimized?

    from selenium import webdriver
    from selenium.webdriver.support.ui import Select

    print('Please type the machine name.')
    machinename = input()
    print('')
    print('Thank you.')
    print('')
    print('Results will show below.')
    print('')

    path_to_chromedriver = 'C:\python34\chromedriver\chromedriver.exe' # change path as needed
    browser = webdriver.Chrome(executable_path = path_to_chromedriver)
    url = 'http://app.corp'
    browser.get(url)



    browser.find_element_by_xpath("/html/body/div[4]/form/table[1]/tbody/tr/td[5]/input[1]").send_keys(machinename)

    browser.find_element_by_css_selector('input[type=\"submit\"]').click() # working to press submit

    xpath = '/html/body/div[4]/form/center[2]/table/thead'
    for i in browser.find_elements_by_xpath(xpath):
        print (i.text)
    xpath = '/html/body/div[4]/form/center[2]/table/tbody/tr'
    for i in browser.find_elements_by_xpath(xpath):
        print (i.text)

    browser.close() 

import os
os.system("c:/code/close_chrome_driver.bat")

error is:

Answer 1

The error occurs because the unicode character ▾ or U+25BE BLACK DOWN-POINTING SMALL TRIANGLE cannot be written into Windows console window, as it does not have a match in the CP850 character set as used by your Windows console.

Now, Python croaks loudly when it cannot print the correct value. You could set the PYTHONIOENCODING environment variable to say cp850:ignore which would make the Python process ignore errors; or you can print to stderr instead of stdout , which would use the backslashescape error handling.