【python实践】之使用pytesser.image_to_string(image).strip()提示WindowsError: [Error 2]错误

python中处理验证码的方式简单的是可以使用pytesser.image_to_string(image).strip()获取图片中的验证码，

但是在使用时会出现以下错误

Traceback (most recent call last):

File "F:\Autotest_omengadmin\public\common.py", line 150, in getcode

code=pytesser.image_to_string(qq).strip() #使用image_to_string识别验证码

File "C:\Python27\lib\site-packages\pytesser\pytesser.py", line 31, in image_to_string

call_tesseract(scratch_image_name, scratch_text_name_root)

File "C:\Python27\lib\site-packages\pytesser\pytesser.py", line 21, in call_tesseract

proc = subprocess.Popen(args)

File "C:\Python27\lib\subprocess.py", line 710, in __init__

errread, errwrite)

File "C:\Python27\lib\subprocess.py", line 958, in _execute_child

startupinfo)

File "D:\Ӧԃɭݾ\Pycharm\PyCharm 4.0.5\helpers\pydev\pydev_monkey.py", line 299, in new_CreateProcess

return getattr(_subprocess, original_name)(appName, patch_arg_str_win(commandLine), *args)

WindowsError: [Error 2]

处理方法：在py文件开头加上：

importos

os.chdir('C:\Python27\Lib\site-packages\pytesser')#改变当前工作目录到指定的路径

备注：修改当前工作目录后，需要在回到当前目录，否则通过相对路径获取不到文件(弊端)

http://tieba.baidu.com/p/4139117491

http://www.runoob.com/python/os-chdir.html