监控log文件的需求
某些特殊原因，想一直看到.log 的最后一行打印，所以写了一些代码监控log
（有个奇怪需求，就是log 因为重复启动原因，会一直加，不是同一个log）
监控界面
涉及的Python代码，
有需要的拿去吧
- 时间戳
- unicode - 没用上（python 3）
- 文件夹遍历
- 读取文件夹
- enumerate（） 方法
- while 循环 +sleep(1)
# 相关的Renderdoc 关于glsl shader的逆向代码 ，非Python：https://blog.csdn.net/avi9111/article/details/132798279?spm=1001.2014.3001.5502
# Notices:
# 1. the 3rd parameter of open() is to disable file buffering
# so file updated by another process could be picked up correctly
# but since your focus is newly added tail, enable buffering is ok too
# 2. It is not necessary to fh.tell() to save the position, and then seek()
# to resume, as if readline() failed, the pointer stay still at the EOFimport sys
import time
import os
if sys.version_info[0] >= 3:unicode = str
'''获取文件的创建时间'''
#模型奇妙 https://www.cnpython.com/qa/153573
def get_FileCreateTime(filePath):#filePath = unicode(filePath,encoding='utf8')#Python 3 renamed the unicode type to str,t = os.path.getctime(filePath)#return TimeStampToTime(t)return t
#获取文件内容(info)，参考：https://blog.csdn.net/HeatDeath/article/details/79526037
def checkLatestLog(folder):files = os.listdir(folder)name_latest = ''t_latest = -1for i,n in enumerate(files):#这个 i 没什么用，就是写着玩t = get_FileCreateTime(folder+"\\" + n)#这个拼接代码应该在 win 平台，才能用if t>t_latest:t_latest = tname_latest = nreturn folder +"\\" + name_latest#这个代码应该在 win 平台，才能用filename = sys.argv[1]#全路径吧，（要是相对路径。。。本来可以，现在应该会有问题 ，下面套了逻辑）
print("...open..."+filename)
thisFilePath= filename
#就是一个很普通的update 循环，也可以不用 with open() 套外面，不过之前代码就是这个逻辑
with open(filename) as fh:
#with open(filename, 'r', 0) as fh:
#with os.fdopen(filename,'wb',0) as fh:while True: line = fh.readline()if not line:time.sleep(1)# 加了一个逻辑==判断当前文件夹是否有最新日志logFilePath = checkLatestLog(os.path.dirname(filename))if(logFilePath!=thisFilePath):fh = open(logFilePath)thisFilePath = logFilePathprint(".............. 换了一个 log .............." + logFilePath)else:print(line)
