文件内容修改

#coding=utf-8
data = ""
URL="188:54:32:8088"
with open('build.js', 'r+') as f:
    for line in f.readlines():
        if(line.find('BASE_URL')!=-1):
            line = 'Server="' + URL+'"'
            data+=line.strip()
        else:
            data += line
        print(u"当前数据"+str(data))

with open('build.js', 'w+') as f:
    f.write(data)