﻿ Pandas: Get a list of a specified column of a DataFrame - w3resource

# Pandas: Get a list of a specified column of a DataFrame

## Pandas: DataFrame Exercise-43 with Solution

Write a Pandas program to get a list of a specified column of a DataFrame.
Sample data:
Original DataFrame
col1 col2 col3
0 1 4 7
1 2 5 8
2 3 6 9
Col2 of the DataFrame to list:
[4, 5, 6]

Sample Solution :-

Python Code :

``````import pandas as pd
d = {'col1': [1, 2, 3], 'col2': [4, 5, 6], 'col3': [7, 8, 9]}
df = pd.DataFrame(data=d)
print("Original DataFrame")
print(df)
col2_list = df["col2"].tolist()
print("Col2 of the DataFrame to list:")
print(col2_list)
``````

Sample Output:

``` Powered by
Original DataFrame
col1  col2  col3
0     1     4     7
1     2     5     8
2     3     6     9
Col2 of the DataFrame to list:
[4, 5, 6]
```

Python-Pandas Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

﻿

## Python: Tips of the Day

Inserting if statements using conditional list comprehensions:

```x = [1, 2, 3, 4, 5, 6]
result = []
for idx in range(len(x)):
if x[idx] % 2 == 0:
result.append(x[idx] * 2)
else:
result.append(x[idx])
result
```

Output:

```[1, 4, 3, 8, 5, 12]
```
`[(element * 2 if element % 2 == 0 else element) for element in x]`

Output:

```[1, 4, 3, 8, 5, 12]
```
`[element * 2 for element in x if element % 2 == 0]`

Output:

```[4, 8, 12]
```