Software Engineering Idiom Code Library -- Python

The main reason I write this is because I don’t want to keep looking for the old code I wrote before, which is both tiring and tiring, and can easily make people bored. So I’ll summarize them all here.

parse string into time object and calculate the interval (in seconds)

# 计算两个时间戳的差值import timefrom datetime import datetime

fmt = "%Y-%m-%dT%H:%M:%S.%fZ" #2016-02-18T12:22:22.123456Ztime1_obj = datetime.strptime(time1, fmt)
time2_obj = datetime.strptime(time2, fmt)
time_interval = int(time.mktime(time2_obj.timetuple()) - time.mktime(time1_obj.timetuple()))

call shell command in Python script

# Python 和 Shell 的结合在实际科研很有用
import subprocess
subprocess.call(["ls", "-l"], cwd=".")

read xml from file_path

import xml.etree.El
ementTree as ETtree = ET.parse("test.xml")
root = tree.getroot()
# apply dom operations on root

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