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`‎07-常用函数.md`

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Original file line number	Diff line number	Diff line change
`@@ -13,6 +13,7 @@`
`13`	`13`	`- [文本相似度](#文本相似度)`
`14`	`14`	`- [json解析](#json解析)`
`15`	`15`	`- [日期格式清洗](#日期格式清洗)`
	`16`	`+ - [时间戳格式](#时间戳格式)`
`16`	`17`	`- [众数占比](#众数占比)`
`17`	`18`	`- [计算非空唯一值](#计算非空唯一值)`
`18`	`19`	`- [分层抽样](#分层抽样)`
`@@ -387,6 +388,40 @@ time_trans(t)`
`387`	`388`
`388`	`389`	`------`
`389`	`390`
	`391`	`+### 时间戳格式`
	`392`	`+`
	`393`	+```python
	`394`	`+# 10位与13位时间戳`
	`395`	`+import datetime`
	`396`	`+import time`
	`397`	`+def get_time_stamp10():`
	`398`	`+ # 生成13时间戳 eg:1540281250399895`
	`399`	`+ datetime_now = datetime.datetime.utcnow()`
	`400`	`+ # 10位,时间点相当于从UNIX TIME的纪元时间开始的当年时间编号`
	`401`	`+ date_stamp = str(int(time.mktime(datetime_now.timetuple())))`
	`402`	`+ # 3位,微秒`
	`403`	`+ data_microsecond = str("%06d"%datetime_now.microsecond)[0:3]`
	`404`	`+ date_stamp = date_stamp`
	`405`	`+ return int(date_stamp)`
	`406`	`+`
	`407`	`+def get_time_stamp13():`
	`408`	`+ # 生成13时间戳 eg:1540281250399895`
	`409`	`+ datetime_now = datetime.datetime.utcnow()`
	`410`	`+ # 10位,时间点相当于从UNIX TIME的纪元时间开始的当年时间编号`
	`411`	`+ date_stamp = str(int(time.mktime(datetime_now.timetuple())))`
	`412`	`+ # 3位,微秒`
	`413`	`+ data_microsecond = str("%06d"%datetime_now.microsecond)[0:3]`
	`414`	`+ date_stamp = date_stamp+data_microsecond`
	`415`	`+ return int(date_stamp)`
	`416`	`+`
	`417`	`+utctime = get_time_stamp10()`
	`418`	`+utctime = get_time_stamp13()`
	`419`	+```
	`420`	`+`
	`421`	`+<br/>`
	`422`	`+`
	`423`	`+------`
	`424`	`+`
`390`	`425`	`### 众数占比`
`391`	`426`
`392`	`427`	```python

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