Skip to content

Commit 4082b1d

Browse files
committed
DOC: Reduce the number of rows in DataFrame.assign examples
1 parent 1a0803d commit 4082b1d

File tree

1 file changed

+6
-22
lines changed

1 file changed

+6
-22
lines changed

pandas/core/frame.py

+6-22
Original file line numberDiff line numberDiff line change
@@ -3354,39 +3354,23 @@ def assign(self, **kwargs):
33543354
33553355
Examples
33563356
--------
3357-
>>> df = pd.DataFrame({'A': range(1, 11),
3358-
... 'B': np.arange(-1.0, 2.0, 0.3)})
3357+
>>> df = pd.DataFrame({'A': range(1, 3),
3358+
... 'B': np.arange(-1.0, 2.0, 1.5)})
33593359
33603360
Where the value is a callable, evaluated on `df`:
33613361
33623362
>>> df.assign(ln_A = lambda x: np.log(x.A))
33633363
A B ln_A
3364-
0 1 -1.0 0.000000
3365-
1 2 -0.7 0.693147
3366-
2 3 -0.4 1.098612
3367-
3 4 -0.1 1.386294
3368-
4 5 0.2 1.609438
3369-
5 6 0.5 1.791759
3370-
6 7 0.8 1.945910
3371-
7 8 1.1 2.079442
3372-
8 9 1.4 2.197225
3373-
9 10 1.7 2.302585
3364+
0 1 -1.0 0.000000
3365+
1 2 0.5 0.693147
33743366
33753367
Where the value already exists and is inserted:
33763368
33773369
>>> newcol = np.log(df['A'])
33783370
>>> df.assign(ln_A=newcol)
33793371
A B ln_A
3380-
0 1 -1.0 0.000000
3381-
1 2 -0.7 0.693147
3382-
2 3 -0.4 1.098612
3383-
3 4 -0.1 1.386294
3384-
4 5 0.2 1.609438
3385-
5 6 0.5 1.791759
3386-
6 7 0.8 1.945910
3387-
7 8 1.1 2.079442
3388-
8 9 1.4 2.197225
3389-
9 10 1.7 2.302585
3372+
0 1 -1.0 0.000000
3373+
1 2 0.5 0.693147
33903374
33913375
Where the keyword arguments depend on each other
33923376

0 commit comments

Comments
 (0)