otp.Operation.str.find

find(sub)

Find the index of sub in the string. If not found, returns -1.

Parameters

sub (str or Column or Operation) – Substring to find.

Returns

The starting position of sub or -1 if not found.

Return type

Operation

Examples

>>> data = otp.Ticks(X=["ananas", "banana", "potato"])
>>> data["Y"] = data["X"].str.find("ana")
>>> otp.run(data)["Y"]
0    0
1    1
2   -1
Name: Y, dtype: int64

>>> data = otp.Ticks(X=["Ananas", "Banana", "Potato"], sub=["Ana", "anan", "ato"])
>>> data["Y"] = data["X"].str.find(data["sub"])
>>> otp.run(data)["Y"]
0    0
1    1
2    3
Name: Y, dtype: int64

Empty string is present in any string

>>> data = otp.Ticks(X=["string", ""])
>>> data["Y"] = data["X"].str.find("")
>>> otp.run(data)["Y"]
0    0
1    0
Name: Y, dtype: int64