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Calculate the number of characters in each word in a Pandas series

  • Last Updated : 28 Jul, 2020
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To calculate the numbers of characters we use Series.str.len(). This function returns the count of the characters in each word in a series.

Syntax: Series.str.len()

Return type: Series of integer values. NULL values might be present too depending upon caller series.

Another way to find the number of characters by using len() function (that wrapped inside the map function) so that the given series substitutes the value of length by taking series of data as input using pandas.series().

Let’s see some examples:



Example 1: We take input of words and count each character of words with the help of Series.map() that substitute the values and gives output using a function named as calc.




# Import pandas library
import pandas as pd
  
# Input series of words
words = pd.Series(['Java', 'Kotlin',
                   'Python', 'Scala',
                    'Ruby'])
print("Given Series:")
print(words)
  
# Substituting values using map
rst = words.map(lambda calc: len(calc))
print("No. of characters in each word in the given series:")
print(rst)

Output:
length of words in series

Example 2: We input a series of words and substitute values using Series.map() and use Series.apply() for single values.




# Import pandas library
import pandas as pd
  
# Input series of words
words = pd.Series(['Number', 'Of', 'Characters',
                   'In', 'Each', 'Word'])[len(count)
                   for count in words]
  
# Substituting values using a map
words.map(len)
  
# For single values
words.apply(len)

Output:
length of words in series-2

Example 3: To print in a specific format of word with its length.




# Import pandas library
import pandas as pd
  
# Input series of words
words = pd.Series(['alphabet', 'consonants'
                   'vowels', 'letters'])
  
# Display length of words
# along with words
for i in range(len(words)):
    print(words[i], words.str.len()[i])     

Output:
length of words in series-4

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