<p>打电话给<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.diff.html#pandas.Series.diff" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code>In [26]:
df['Entries diff']= df['ENTRIESn'].diff()
df
Out[26]:
C/A UNIT SCP DATEn TIMEn DESCn ENTRIESn EXITSn \
index
0 A002 R051 02-00-00 05-01-11 00:00:00 REGULAR 3144312 1088151
1 A002 R051 02-00-00 05-01-11 04:00:00 REGULAR 3144335 1088159
2 A002 R051 02-00-00 05-01-11 08:00:00 REGULAR 3144353 1088177
3 A002 R051 02-00-00 05-01-11 12:00:00 REGULAR 3144424 1088231
4 A002 R051 02-00-00 05-01-11 16:00:00 REGULAR 3144594 1088275
5 A002 R051 02-00-00 05-01-11 20:00:00 REGULAR 3144808 1088317
6 A002 R051 02-00-00 05-02-11 00:00:00 REGULAR 3144895 1088328
Entries diff
index
0 NaN
1 23
2 18
3 71
4 170
5 214
6 87
</code></pre>