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Python Partition

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Partition

Python Partition is one of the Python String Method which is used to split the given string using the specified separator and return a tuple with three arguments. This function will start looking for the separator from Left Hand side and once it finds the separator, it will return the string before the Separator as Tuple Item 1, Separator itself as Tuple Item 2 and remaining string (or string after the Separator) as Tuple Item 3. In this article we will show you, How to write Partition in Python Programming with example.

TIP: Please refer Python RPartition article to understand the RPartition method, which performs the same operation but from right to left.

Syntax of a Partition Function in Python

The basic syntax of the Partition method in Python Programming Language is as shown below:

String_Value.partition(Separator)
  • String_Value: Please select the valid String variable or you can use the String directly.
  • Separator: This argument is required and if you forget this argument, python will throw TypeError.

NOTE: If you pass the non existing item as the separator then it will return the whole string as Tuple Item 1 followed by two empty tuple items.

Return Value

Python Partition function will return Tuple with three arguments. For example, If we have A*B*C and If we use * as separator, Partition function will search for * from left to right. Once it find * it will return the string before the * symbol as Tuple Item 1 (A), * as Tuple Item 2 and remaining string as Tuple Item 3 (B*C)

TIP: Even though there are multiple occurrences of the separator, Partition function will look for the first occurrence

Python Partition method Example

The following set of examples will help you understand the Partition Function in Python Programming Language.

PYTHON CODE

# Python Partition Method Example
 
Str1 = 'Tutorial Gateway'
Str2 = 'Learn-Python-Programming'
Str3 = '[email protected]'
 
Str4 = Str1.partition(' ')
print("After Partitioning String 1 = ", Str4)

Str5 = Str2.partition('-')
print("After Partitioning String 2 = ", Str5)

Str6 = Str3.partition('@')
print("After Partitioning String 3 = ", Str6)

#Performing Python Partition function directly
Str7 = 'First_Image.png'.partition('.')
print("After Partitioning String 7 = ", Str7)

OUTPUT

Python Partition Method

ANALYSIS

First we declared three String variable Str1, Str2, Str3 and assigned corresponding value using following statement

Str1 = 'Tutorial Gateway'
Str2 = 'Learn-Python-Programming'
Str3 = '[email protected]'

Following statement will partition the Str1 string into multiple parts based on the separator we specified (i.e, Empty Space) and prints the output.

Str4 = Str1.partition(' ')
print("After Partitioning String 1 = ", Str4)

Following statement will partition the Str2 string into multiple parts based on the ‘_’ symbol and prints the output.

Str5 = Str2.partition('-')
print("After Partitioning String 2 = ", Str5)

Following statement will partition the Str3 string into multiple parts based on the ‘@’ symbol and prints the output.

Str6 = Str3.partition('@')
print("After Partitioning String 3 = ", Str6)

Below statement we used the Partition function directly on String

Str7 = 'First_Image.png'.partition('.')
print("After Partitioning String 7 = ", Str7)

If you try something like,

Str8 = Str1.partition('*')

Above statement will look for *, which doesn’t exist so it will return the tuple as (‘Tutorial Gateway’, ”, ”)

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