`pandas` offers the `count()` method, which counts all **non-null** cells (neither `None` nor `NaN`) for each column.
```python
df = pd.read_csv(file.csv)
number_of_cells = df.count()
```

To find the **count** of non-null values in a specific column, use the following syntax:
```python
df = pd.read_csv(file.csv)
number_of_cells = df['name of the column'].count()
```

`pandas` also provides the `sum()` method. This method calculates the sum of values for each column, but it only works with **numeric** or **boolean** columns.
```python
df = pd.read_csv(file.csv)
total = df.sum()
```

Since the `isna()` method returns a **boolean DataFrame**, you can use the following syntax to calculate the number of missing values for each of the columns:

```python
missing_values_count = df.isna().sum()
```

To find the sum of values in a particular column, use the following syntax:
```python
df = pd.read_csv(file.csv)
total = df['name of the column'].sum()
```

Pandas is an extremely user-friendly library for data analysis. It's also designed to handle large datasets, using data structures like DataFrame and Series. This makes it an invaluable tool for Data Science. In this guide, you'll get acquainted with a range of statistical functions, including how to find correlations, modes, medians, and maximum and minimum values within a dataset. You'll also learn how to handle missing values and manipulate specific values, as well as how to remove them.

In this section, we'll explore the fundamentals of Series and DataFrame structures. You'll also learn about the distinctions between these two types of structures.

Data can be sourced in various formats, such as CSV, JSON, SQL, HTML, and more. With Pandas, you're not limited to a single format — you can work with data across a multitude of file types. In this chapter, we'll specifically focus on the CSV and TXT formats.

Here, you'll learn how to process raw data by removing extraneous information and managing null values in a dataset.

Pandas First Steps

sum() and count()

Solution

sum() and count()

Solution