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numpy.char.startswith
- numpy.char.startswith(a, prefix, start=0, end=None)
- 
    Returns a boolean array which is Truewhere the string element inastarts withprefix, otherwiseFalse.Calls str.startswithelement-wise.- Parameters
- 
      - aarray_like of str or unicode
- prefixstr
- start, endint, optional
- 
        With optional start, test beginning at that position. With optionalend, stop comparing at that position.
 
- Returns
- 
      - outndarray
- 
        Array of booleans 
 
 See also 
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 https://numpy.org/doc/1.19/reference/generated/numpy.char.startswith.html