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Python String | find() method with Examples

Python String find() method with Examples on capitalize(), center(), count(), encode(), find(), format(), index(), join(), lower(), ljust(), isupper(), istitle(), isspace(), isprintable(), isnumeric(), islower() etc.

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Python String find() Method

Python find() method finds substring in the whole string and returns index of the first match. It returns -1 if substring does not match.

Signature

find(sub[, start[, end]])

Parameters

  • sub : substring
  • start : start index a range
  • end : last index of the range

Return Type

If found it returns index of the substring, otherwise -1.

Let's see some examples to understand the find() method.

Python String find() Method Example 1

An example of simple find method which takes only single parameter (a substring). 

# Python find() function example
# Variable declaration
str = "Welcome to the TheDeveloperBlog."
# Calling function
str2 = str.find("the")
# Displaying result
print(str2)

Output:

11

Python String find() Method Example 2

It returns -1 if not found any match, see the example.

# Python find() function example
# Variable declaration
str = "Welcome to the TheDeveloperBlog."
# Calling function
str2 = str.find("is")
# Displaying result
print(str2)

Output:

-1

Python String find() Method Example 3

Let's specify other parameters too and makes search more customize.

# Python find() function example
# Variable declaration
str = "Welcome to the TheDeveloperBlog."
# Calling function
str2 = str.find("t")
str3 = str.find("t",25)
# Displaying result
print(str2)
print(str3)

Output:

8
-1

Python String find() Method Example 4

# Python find() function example
# Variable declaration
str = "Welcome to the TheDeveloperBlog."
# Calling function
str2 = str.find("t")
str3 = str.find("t",20,25)
# Displaying result
print(str2)
print(str3)

Output:

8
24

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