Removes leading characters (whitespaces by default) from each string element.
Remove leading "M" characters from the Title column:
>>> view = catalog.get_view("GROCERYCUSTOMER")
>>> view["TitleStrip"] = view["Title"].str.lstrip("M")
>>> view.preview(5).filter(regex="Title")
Title TitleStrip
0 Ms. s.
1 Ms. s.
2 Mr. r.
3 Mrs. rs.
4 Mr. r.