如何使用pandas在csv文件中获取秒时间列？

Question

在一个csv文件中加载了开始时间和结束时间作为两列，我想用一个数字划分其中一列，我该怎么做？

Answer 1

正如其他人提到的更多信息会有所帮助，你无法真正划分 a＆＃39; start_time＆＃39;一个数字。如果开始时间是整数时间戳，则为是。尝试这样的事情。

import pandas as pd

THE_DIVISOR = 25342
# data is like 
# station_id, start_time, end_time  
# (INT), (epoch timestamp), (epoch timestamp)

df = pd.read_csv('dobis.csv')
print df.head()

# now to divide a column by another number
# use vectorization
df['divided_timed'] = df['start_time'] / THE_DIVISOR

# can do other things too, great thing about python is that
# most of the time you can just try something and 
# usually the logical sounding code just works.

df['extra_time'] = (df['start_time'] * 2340834) + (df['end_time'] / 2340)