How to slice a Pandas Data Frame by position?

user_1255817 0
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I have a Pandas Data Frame object that has 1000 rows and 10 columns. I would simply like to slice the Data Frame and take the first 10 rows. How can I do this? I've been trying to use this:

>>> df.shape
(1000,10)
>>> my_slice = df.ix[10,:]
>>> my_slice.shape
(10,)

Shouldn't my_slice be the first ten rows, ie. a 10 x 10 Data Frame? How can I get the first ten rows, such that my_slice is a 10x10 Data Frame object? Thanks.

pandas dataframe slice python
5 Answers

I can see at least three options:

Option 1

df[:10]

Option 2

Using head

df.head(10)

For negative values of n, this function returns all rows except the last n rows, equivalent to df[:-n] [Source].

Option 3

Using iloc

df.iloc[:10]
user_71098690

DataFrame[:n] will return first n rows.

user_133923670
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