Python · Theory

rfind(str,beg=0,end=len(str))

Theory

235/268

rfind(str,beg=0,end=len(str))

rfind is a string helper. You call it on text like "Asha" or "banana". It gives a new string (or a number/True-False). The old string does not change unless you assign the result back.

rfind(str,beg=0,end=len(str)) — output — 5. Last a.

Fresher trap: writing s.rfind() and expecting s to update. Strings are immutable. Write s = s.rfind(...) if you need the new value (when it returns a string).

Exam tip

Call rfind on one real word and say what prints.

Example

# rfind(str,beg=0,end=len(str))
print("banana".rfind("a"))

rfind(str,beg=0,end=len(str)) — output: 5. Last a.

Short notes

Defrfind works on str.
Rulerfind usually returns a new string.
Traprfind does not change the original string in place.

Python · Theory

rfind(str,beg=0,end=len(str))

← All stacks

Theory

235/268

rfind(str,beg=0,end=len(str))

rfind is a string helper. You call it on text like "Asha" or "banana". It gives a new string (or a number/True-False). The old string does not change unless you assign the result back.

rfind(str,beg=0,end=len(str)) — output — 5. Last a.

Fresher trap: writing s.rfind() and expecting s to update. Strings are immutable. Write s = s.rfind(...) if you need the new value (when it returns a string).

Exam tip

Call rfind on one real word and say what prints.

Example

# rfind(str,beg=0,end=len(str))
print("banana".rfind("a"))

rfind(str,beg=0,end=len(str)) — output: 5. Last a.

Short notes

Defrfind works on str.
Rulerfind usually returns a new string.
Traprfind does not change the original string in place.

rfind(str,beg=0,end=len(str))

Example

Short notes

Questions

rfind(str,beg=0,end=len(str))

Example

Short notes

Questions