调用函数时发生Python错误

Question

我正在使用Anaconda spyder版本3.3.4和python 3.7 我有以下代码，它显示了这种错误：

File "/Users/sripdeep/Desktop/Tongue_Cancer/createxml.py", line 47
    files = os.listdir(XML_PATH)
        ^
SyntaxError: invalid syntax

如果我甚至不带for循环调用函数，就会在函数声明后显示

我的代码如下：

import random, os, time
from PIL import Image
import xml.dom.minidom as minidom
#import xml.etree.ElementTree as ET
from tonguecrop import *
from lxml import etree

CROP_PATH = '/Users/sripdeep/Desktop/Tongue_Cancer/crop'
NEWXML_PATH = "/Users/sripdeep/Desktop/Tongue_Cancer/newxml"
XML_PATH = "/Users/sripdeep/Desktop/Tongue_Cancer/krupali-sample/annotation"
with Image.open(os.path.join(CROP_PATH, file),'r') as im:
    dx , dy = im.size
    #print (dx,dy)
def generate_xml(f): 
    for i in range(1,6):
        tree = etree.parse(f)
        root = tree.getroot()

        #print (root[6][4][0].text)
        xmin = int(root[6][4][0].text)
        xmin = dx - xmin
        root[6][4][0].text = str(xmin)
        #print (root[6][4][1].text)
        ymin = int(root[6][4][1].text)
        ymin = dy - ymin
        root[6][4][1].text = str(ymin)
        #print (root[6][4][2].text)
        xmax = int(root[6][4][2].text) 
        xmax = dx - xmax  
        root[6][4][2].text = str(xmax)
        #print (root[6][4][3].text)
        ymax = int(root[6][4][3].text)
        ymax = dy - ymax
        root[6][4][3].text = str(ymax)

        #print (xmin,ymin,xmax,ymax)

        newname = XML_PATH.replace('.', '_{:03d}.'.format(i))
        tree.write(open(os.path.join(NEWXML_PATH , newname), 'wb')  

files = os.listdir(XML_PATH)
numOfImages = len(files)
for file in files:
    with Image.open(os.path.join(XML_PATH, file)) as F:
       generate_xml(f)