Write a program in Python to slice substrings from each element in a given series

In Pandas, you can slice substrings from each element in a Series using string methods. This is useful for extracting specific characters or patterns from text data.

Creating a Sample Series

Let's start by creating a Series with fruit names ?

import pandas as pd

data = pd.Series(['Apple', 'Orange', 'Mango', 'Kiwis'])
print("Original Series:")
print(data)

Original Series:
0     Apple
1    Orange
2     Mango
3     Kiwis
dtype: object

Method 1: Using str.slice()

The str.slice() method allows you to specify start, stop, and step parameters ?

import pandas as pd

data = pd.Series(['Apple', 'Orange', 'Mango', 'Kiwis'])
result = data.str.slice(start=0, stop=4, step=2)
print("Sliced substrings using str.slice():")
print(result)

Sliced substrings using str.slice():
0    Ap
1    Oa
2    Mn
3    Kw
dtype: object

Method 2: Using String Indexing

You can also use Python's slice notation with the str accessor ?

import pandas as pd

data = pd.Series(['Apple', 'Orange', 'Mango', 'Kiwis'])
result = data.str[0:4:2]
print("Sliced substrings using string indexing:")
print(result)

Sliced substrings using string indexing:
0    Ap
1    Oa
2    Mn
3    Kw
dtype: object

Understanding the Parameters

Both methods use the same slicing parameters:

• start=0: Begin from the first character (index 0)
• stop=4: End before the 5th character (index 4)
• step=2: Take every 2nd character

Additional Examples

Here are more slicing patterns you can use ?

import pandas as pd

data = pd.Series(['Apple', 'Orange', 'Mango', 'Kiwis'])

print("First 3 characters:")
print(data.str[:3])
print("\nLast 2 characters:")
print(data.str[-2:])
print("\nEvery 2nd character:")
print(data.str[::2])

First 3 characters:
0     App
1     Ora
2     Man
3     Kiw
dtype: object

Last 2 characters:
0     le
1     ge
2     go
3     is
dtype: object

Every 2nd character:
0     Ape
1     Orne
2     Mno
3     Kis
dtype: object

Comparison

Conclusion

Both str.slice() and string indexing produce identical results for substring extraction. Use string indexing for concise code or str.slice() when you need explicit parameter names for clarity.