"how much wood would a woodchuck chuck if a woodchuck could chuck wood".replace("wood", "***")

x="wood"

.replace(x, "***")

s = "how much wood would a woodchuck chuck if a woodchuck could chuck wood"

s.replace(x, "***")

s

s.count("wood")

s.endswith("woodchuck")

s.startswith("wood")

s.startswith("how much")

s.isalnum()

s.isalpha()

s.replace(" ", "").isalnum()

"123".isdigit()

"\r\n\t ".isspace()

bool("")

bool(" ")

"abc".islower()

"ABC".isupper()

"AbC".islower() or "AbC".isupper()

"Title Case Is When The First Letter Of Every Word Is Capitalized".istitle()

s[0].isupper()

s[0]

s

"wood" in s

"bananah" in s

"woodchuck chuck" in s