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Merged
merged 8 commits into from
Jan 1, 2022
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REF: Deduplicate to_xml code #45132

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f991d2c
REF: Deduplicate to_xml code
phofl Dec 30, 2021
0d6ee97
Merge branch 'master' of https://github.com/pandas-dev/pandas into re…
phofl Dec 30, 2021
97a6168
Refactor to fix mypy
phofl Dec 30, 2021
97b90f1
Return value
phofl Dec 30, 2021
8e2d899
Return value
phofl Dec 30, 2021
2991eec
Adjust type hints
phofl Dec 31, 2021
1632c83
Adjust code
phofl Dec 31, 2021
aac9d31
Add hint
phofl Dec 31, 2021
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137 changes: 41 additions & 96 deletions pandas/io/formats/xml.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ def __init__(
self,
frame: DataFrame,
path_or_buffer: FilePath | WriteBuffer[bytes] | None = None,
index: bool | None = True,
index: bool = True,
root_name: str | None = "data",
row_name: str | None = "row",
na_rep: str | None = None,
Expand Down Expand Up @@ -189,8 +189,8 @@ def process_dataframe(self) -> dict[int | str, dict[str, Any]]:
if self.index:
df = df.reset_index()

if self.na_rep:
df = df.replace({None: self.na_rep, float("nan"): self.na_rep})
if self.na_rep is not None:
df = df.fillna(self.na_rep)

return df.to_dict(orient="index")

Expand Down Expand Up @@ -255,7 +255,27 @@ def build_attribs(self) -> None:
works with tuples for multindex or hierarchical columns.
"""

raise AbstractMethodError(self)
if not self.attr_cols:
return

for col in self.attr_cols:
attr_name = self._get_flat_col_name(col)
try:
val = None if isna(self.d[col]) else str(self.d[col])
if val is not None:
self.elem_row.attrib[attr_name] = val
except KeyError:
raise KeyError(f"no valid column, {col}")

def _get_flat_col_name(self, col: str | tuple) -> str:
flat_col = col
if isinstance(col, tuple):
flat_col = (
"".join([str(c) for c in col]).strip()
if "" in col
else "_".join([str(c) for c in col]).strip()
)
return f"{self.prefix_uri}{flat_col}"

def build_elems(self) -> None:
"""
Expand All @@ -267,6 +287,21 @@ def build_elems(self) -> None:

raise AbstractMethodError(self)

def _build_elems(self, sub_element_cls) -> None:

if not self.elem_cols:
return

for col in self.elem_cols:
elem_name = self._get_flat_col_name(col)
try:
val = (
None if isna(self.d[col]) or self.d[col] == "" else str(self.d[col])
)
sub_element_cls(self.elem_row, elem_name).text = val
except KeyError:
raise KeyError(f"no valid column, {col}")

def write_output(self) -> str | None:
xml_doc = self.build_tree()

Expand Down Expand Up @@ -357,56 +392,10 @@ def get_prefix_uri(self) -> str:

return uri

def build_attribs(self) -> None:
if not self.attr_cols:
return

for col in self.attr_cols:
flat_col = col
if isinstance(col, tuple):
flat_col = (
"".join([str(c) for c in col]).strip()
if "" in col
else "_".join([str(c) for c in col]).strip()
)

attr_name = f"{self.prefix_uri}{flat_col}"
try:
val = (
None
if self.d[col] is None or self.d[col] != self.d[col]
else str(self.d[col])
)
if val is not None:
self.elem_row.attrib[attr_name] = val
except KeyError:
raise KeyError(f"no valid column, {col}")

def build_elems(self) -> None:
from xml.etree.ElementTree import SubElement

if not self.elem_cols:
return

for col in self.elem_cols:
flat_col = col
if isinstance(col, tuple):
flat_col = (
"".join([str(c) for c in col]).strip()
if "" in col
else "_".join([str(c) for c in col]).strip()
)

elem_name = f"{self.prefix_uri}{flat_col}"
try:
val = (
None
if self.d[col] in [None, ""] or self.d[col] != self.d[col]
else str(self.d[col])
)
SubElement(self.elem_row, elem_name).text = val
except KeyError:
raise KeyError(f"no valid column, {col}")
self._build_elems(SubElement)

def prettify_tree(self) -> bytes:
"""
Expand Down Expand Up @@ -529,54 +518,10 @@ def get_prefix_uri(self) -> str:

return uri

def build_attribs(self) -> None:
if not self.attr_cols:
return

for col in self.attr_cols:
flat_col = col
if isinstance(col, tuple):
flat_col = (
"".join([str(c) for c in col]).strip()
if "" in col
else "_".join([str(c) for c in col]).strip()
)

attr_name = f"{self.prefix_uri}{flat_col}"
try:
val = (
None
if self.d[col] is None or self.d[col] != self.d[col]
else str(self.d[col])
)
if val is not None:
self.elem_row.attrib[attr_name] = val
except KeyError:
raise KeyError(f"no valid column, {col}")

def build_elems(self) -> None:
from lxml.etree import SubElement

if not self.elem_cols:
return

for col in self.elem_cols:
flat_col = col
if isinstance(col, tuple):
flat_col = (
"".join([str(c) for c in col]).strip()
if "" in col
else "_".join([str(c) for c in col]).strip()
)

elem_name = f"{self.prefix_uri}{flat_col}"
try:
val = (
None if isna(self.d[col]) or self.d[col] == "" else str(self.d[col])
)
SubElement(self.elem_row, elem_name).text = val
except KeyError:
raise KeyError(f"no valid column, {col}")
self._build_elems(SubElement)

def transform_doc(self) -> bytes:
"""
Expand Down
6 changes: 3 additions & 3 deletions pandas/tests/io/xml/test_to_xml.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1309,7 +1309,7 @@ def test_filename_and_suffix_comp(parser, compression_only):


@td.skip_if_no("lxml")
def test_ea_dtypes(any_numeric_ea_dtype):
def test_ea_dtypes(any_numeric_ea_dtype, parser):
# GH#43903
expected = """<?xml version='1.0' encoding='utf-8'?>
<data>
Expand All @@ -1319,8 +1319,8 @@ def test_ea_dtypes(any_numeric_ea_dtype):
</row>
</data>"""
df = DataFrame({"a": [NA]}).astype(any_numeric_ea_dtype)
result = df.to_xml()
assert result.strip() == expected
result = df.to_xml(parser=parser)
assert equalize_decl(result).strip() == expected


def test_unsuported_compression(datapath, parser):
Expand Down