code: def test_deepcopy():
      p = ggplot(data, aes("x")) + geom_histogram()
      p2 = deepcopy(p)
      assert p is not p2
      # Not sure what we have to do for that...
      assert p.data is p2.data
      assert len(p.layers) == len(p2.layers)
      assert p.layers[0].geom is not p2.layers[0].geom
      assert len(p.mapping) == len(p2.mapping)
      assert p.mapping is not p2.mapping
      assert p.environment == p2.environment
      assert p.environment is not p2.environment
  
imports: from copy import deepcopy
  import numpy
  import pandas
  import pytest
  from plotnine import aes, after_scale, after_stat, annotate, coord_trans, facet_null, geom_bar, geom_histogram, geom_line, geom_point, ggplot, ggtitle, guides, labs, lims, scale_x_continuous, stage, stat_identity, theme, theme_gray, xlab, xlim, ylab
  from plotnine.exceptions import PlotnineError, PlotnineWarning
  from plotnine.mapping.aes import is_valid_aesthetic
label_desc: Use image node_id 5 for calling a global function with example usage: test_deepcopy() without return types