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import
pandas
as
pd
import
numpy
as
np
df
=
pd.
DataFrame
(
{
'uno'
:
[
1
,
2
,
3
]
,
'dos'
:
[
4
,
5
,
6
]
,
'tres'
:
[
7
,
8
,
9
]
}
,
index
=
[
'x'
,
'y'
,
'z'
]
)
# Eleva al cuadrado todos los elementos:
print
(
df.
applymap
(
lambda
x: x*x
)
)
print
(
)
# Triplica los elementos de la columna 'dos':
print
(
df
[
'dos'
]
.
map
(
lambda
x:
3
* x
)
)