xorbits.pandas.DataFrame.head#

DataFrame.head(n=5)#

Return the first n rows.

This function returns the first n rows for the object based on position. It is useful for quickly testing if your object has the right type of data in it.

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

If n is larger than the number of rows, this function returns all rows.

参数

n (int, default 5) – Number of rows to select.

返回

The first n rows of the caller object.

返回类型

same type as caller

参见

DataFrame.tail

Returns the last n rows.

实际案例

>>> df = pd.DataFrame({'animal': ['alligator', 'bee', 'falcon', 'lion',  
...                    'monkey', 'parrot', 'shark', 'whale', 'zebra']})
>>> df  
      animal
0  alligator
1        bee
2     falcon
3       lion
4     monkey
5     parrot
6      shark
7      whale
8      zebra

Viewing the first 5 lines

>>> df.head()  
      animal
0  alligator
1        bee
2     falcon
3       lion
4     monkey

Viewing the first n lines (three in this case)

>>> df.head(3)  
      animal
0  alligator
1        bee
2     falcon

For negative values of n

>>> df.head(-3)  
      animal
0  alligator
1        bee
2     falcon
3       lion
4     monkey
5     parrot

This docstring was copied from pandas.core.frame.DataFrame.