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TST: Verify columns entirely below chop_threshold still print (#6839) #16809

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Jul 1, 2017
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TST: Verify columns entirely below chop_threshold still print (#6839) #16809

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27 changes: 27 additions & 0 deletions pandas/tests/io/formats/test_format.py
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Original file line number Diff line number Diff line change
Expand Up @@ -209,6 +209,33 @@ def test_repr_chop_threshold(self):
with option_context("display.chop_threshold", None):
assert repr(df) == ' 0 1\n0 0.1 0.5\n1 0.5 -0.1'

def test_repr_chop_threshold_column_below(self):
# GH 6839: validation case

df = pd.DataFrame([[10, 20, 30, 40],
[8e-10, -1e-11, 2e-9, -2e-11]]).T

with option_context("display.chop_threshold", 0):
assert repr(df) == (' 0 1\n'
'0 10.0 8.000000e-10\n'
'1 20.0 -1.000000e-11\n'
'2 30.0 2.000000e-09\n'
'3 40.0 -2.000000e-11')

with option_context("display.chop_threshold", 1e-8):
assert repr(df) == (' 0 1\n'
'0 10.0 0.000000e+00\n'
'1 20.0 0.000000e+00\n'
'2 30.0 0.000000e+00\n'
'3 40.0 0.000000e+00')

with option_context("display.chop_threshold", 5e-11):
assert repr(df) == (' 0 1\n'
'0 10.0 8.000000e-10\n'
'1 20.0 0.000000e+00\n'
'2 30.0 2.000000e-09\n'
'3 40.0 0.000000e+00')

def test_repr_obeys_max_seq_limit(self):
with option_context("display.max_seq_items", 2000):
assert len(printing.pprint_thing(lrange(1000))) > 1000
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