The **`rfind` method** in `Python` returns the *index* of the last occurrence of a substring in a string. If the substring is not present in the string, then `-1` will be returned.

# 
#  Syntax

---
```
string.rfind(substring [, start[, end]] )
```

# 
#  Arguments

* **`substring`**: String to be searched. 

* **`start`**: The index from which the substring search should start. This is an optional value, and by default, the value is `0`. The start index is included.

* **`end`**: The index to which the substring search should happen. This is an optional value, and by default, the value is the length of the string. This index is excluded.

##
## Return value

This is the last index at which the substring is found. If the substring is not present, `-1` is returned. 

##
## Code

string = "The Small Smaller";

print("The index of Small is")
print(string.rfind("Small"));

print("\nThe index of Big is")
print(string.rfind("Big"));

print("\nThe index of 'Small' from index 7")
print(string.rfind("Small", 7));

print("\nThe searching for 'Small' from index 1 and 10")
print(string.rfind("Small", 1, 10));

# 
## Explanation

In the code above, we created a `The Small, Smaller` string.

---
```
string.rfind("Small")
```
---
* We used the `rfind` method to check the last index at which `Small` is present in the string. We will get `10` as a result.

---
```
string.rfind("Big")
```
---

* The word `Big` is not present in the string so the `rfind` method will return `-1`.

---
```
string.rfind("Small", 7)
```
---

* In this case, the `rfind` method will search the `Small` string from index `7` and return the last index at which the `Small` string is present.  We will get `10` as a result.

---
```
string.rfind("Small", 1,10)
```
---

* In this case, the `rfind` method will search the `Small` string from index `1` to index `10` and return the last index at which the `Small` string is present. We will get `4` as a result.

What is the string.rfind method in Python?

rfind() in Python returns the last index of a substring in a string or -1 if not found.