parameters: (a, x)
docstring: Locate the leftmost value exactly equal to x
docstring_summary: Locate the leftmost value exactly equal to x
docstring_tokens: Locate the leftmost value exactly equal to x
function: def _find_lteq(a, x):
      'Locate the leftmost value exactly equal to x'
      i = bisect_left(a, x)
      if i != len(a) and a[i] == x:
          return i
      raise ValueError
function_tokens: def _find_lteq ( a , x ) : i = bisect_left ( a , x ) if i != len ( a ) and a [ i ] == x : return i raise ValueError