import requests
from lxml import etree
import time
import csv
from urllib.request import urlopen, Request
from lxml import etree


def crow_first(n):
    print(n)
    # 定义函数抓取每页前30条商品信息
    # 构造每一页的url变化



if __name__ == '__main__':
    for i in range(1, 10):
        # 下面的print函数主要是为了方便查看当前抓到第几页了
        print('***************************************************')
        try:
            print('   First_Page:   ' + str(i))
            crow_first(i)
            print('   Finish')
        except Exception as e:
            print(e)

import os
import win32com.client as win32
import shutil
import openpyxl

import time


def writedate( ):
    fn = 'ERP模板样例-(E203)财务状况.xlsx'
    wb = openpyxl.load_workbook(fn)

    ws = wb.get_sheet_by_name("1、E203_2020年四季度")

    ws['E3'] = 88888888

    wb.save('ERP模板样例-(E203)财务状况.xlsx')




if __name__ == '__main__':
    writedate()

我写了一个程序，想调用main中的函数。但是，我收到了一个语法错误。我不知道我做错了什么。这是我的代码，我尝试了一些东西，但是主函数不会调用其余的函数。在class Matrix(object):

def open_file():

'''Opens the file if it exists, otherwise prints out error message'''

Done = False

while not Done:

try:

File = input("Enter a filename: ").lower() #Asks user for a file to input

Open_File = open(File, "r") #Open the file if it exists and reads it

Info = Open_File.readlines()[1:]

Open_File.close() #Close the file

Done = True #Exits the while loop

except FileNotFoundError:

print("Sorry that file doesn't exist!") #prints out error message if file doesn't exist

return Info #Info is the file_pointer(fp)

def __init__(self): # This completed method is given

'''Create and initialize your class attributes.'''

self._matrix = {} #Intialize the matrix

self._rooms = 0 #Set the rooms equal to zero

def read_file(self, Info): #Info is equvalient to the file pointer or fp

'''Build an adjacency matrix that you read from a file fp.'''

self._rooms = Info.readline()

self._rooms = int(self._rooms)

for line in Info:

a, b = map(int, line.split())

self._matrix.setdefault(a, set()).add(b)

self._matrix.setdefault(b, set()).add(a)

return self._rooms and self._matrix

def __str__(self):

'''Return the adjacency matrix as a string.'''

s = str(self._matrix)

return s #__str__ always returns a string

def main(self):

matrix = Matrix()

info = matrix.open_file()

matrix.read_file(info)

s = str(matrix)

print(s)

if __name__ == '__main__':

m = Matrix()

m.main()