坐标提取-改进版

用刚学的eval()方法对代码进行了改进，感觉发现了新大陆

#!/usr/local/bin/python3
# -*- coding:utf-8 -*-
count=0
with open("location_data3",'w',encoding="utf-8") as f:
    for a in open("location_data",'r',encoding="utf-8").read():
        if a!='(' and a!=')':
            f.write(a)
        elif a=='(':
            f.write('[')
        elif a==')':
            f.write(']')
for i in eval(open("location_data3",'r',encoding="utf-8").readline()):
    if i[0]<500 and i[1]<1000:  #这里调参数
        count+=1
        print(i)
print(count)