The **`FreqDist` function** gives the user the frequency distribution of all the words in the text. This is particularly helpful in probability calculations, where frequency distribution counts the number of times that each outcome of an experiment occurs. 
 ### Library
The `FreqDist` function is accessible via the `nltk` library.
# Supplementary function
`FreqDist` expects an iterable list of tokens. Although a string is iterable, it is not iterable in the form of tokens.

The text is passed to a tokenizer first, and then the tokens are sent to `FreqDist`.
To import the tokenizer: 
```python
from nltk.tokenize import word_tokenize
```
# Syntax
To import `FreqDist` from the library:
```python
from nltk.probability import FreqDist
```

To run the `FreqDist` function:
```python
fdist = FreqDist(word.lower() for word in word_tokenize(sentence))
```

 

What is FreqDist in Python?

The FreqDist function in Python's nltk library computes word frequency distributions, aiding in probability calculations.