8. Strings: A Deeper Look

Objectives

In this chapter, you’ll:

  • Understand text processing.
  • Use string methods.
  • Format string content.
  • Concatenate and repeat strings.
  • Strip whitespace from the ends of strings.
  • Change characters from lowercase to uppercase and vice versa.

Objectives (cont.)

  • Compare strings with the comparison operators.
  • Search strings for substrings and replace substrings.
  • Split strings into tokens.
  • Concatenate strings into a single string with a specified separator between items.
  • Create and use regular expressions to match patterns in strings, replace substrings and validate data.

Objectives (cont.)

  • Use regular expression metacharacters, quantifiers, character classes and grouping.
  • Understand how critical string manipulations are to natural language processing.
  • Understand the data science terms data munging, data wrangling and data cleaning, and use regular expressions to munge data into preferred formats.

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