code: def _fix_shape_1d(x, n, axis):
      if n < 1:
          raise ValueError(
              f"invalid number of data points ({n}) specified"
          )
  
      return _fix_shape(x, (n,), (axis,))
  
file_path: scipy/scipy/fft/_pocketfft/helper.py
imports: from numbers import Number
  import operator
  import os
  import threading
  import contextlib
  import numpy
  from .pypocketfft import good_size
label_desc: Use image node_id 6 for calling a global function with example usage: _fix_shape_1d(x, n, axis) and returns: _fix_shape