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Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu |
Version of October 6, 2025 at 4:00PM
In this list of common string methods, S is the string to which the method is applied, and s and t are other strings.
| Operation | Description |
|---|---|
| S.capitalize() | If the first character of S is a letter, capitalize it |
| S.count(s) | Count the number of times s occurs in S |
| S.endswith(s) | True if S ends with s; False otherwise |
| S.find(s) | Return the index of the first occurrence of s in S; −1 if s not in S |
| S.index(s) | Return the index of the first occurrence of s in S; ValueError exception if s not in S |
| S.isalnum() | True if S contains only alphanumerics (letters and digits); False otherwise |
| S.isalpha() | True if S contains only alphabetics (letters); False otherwise |
| S.isdigit() | True if S contains only digits; False otherwise |
| S.islower() | True if all letters in S are lower case; False otherwise |
| S.isspace() | True if S contains only white space; False otherwise |
| S.isupper() | True if all letters in S are upper case; False otherwise |
| S.lower() | Change all upper case letters in S to lower case |
| S.lstrip() | Delete all leading white space from S and return the result |
| S.replace(s,t) | Replace all occurrences of s with t in S |
| S.rfind(s) | Return the index of the last occurrence of s in S; −1 if s not in S |
| S.rindex(s) | Return the index of the last occurrence of s in S; ValueError exception if s not in S |
| S.rstrip() | Delete all trailing white space from S |
| S.strip() | Delete all leading and trailing white space from S |
| S.swapcase() | Change all upper case letters in S to lower case and all lower case letters to upper case |
| S.title() | Capitalize each word in S |
| S.upper() | Change all lower case letters in S to upper case |
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MHI 289I, Programming in Health Informatics Version of October 6, 2025 at 4:00PM
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