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tabulate.py
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tabulate.py
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# -*- coding: utf-8 -*-
"""Pretty-print tabular data."""
from __future__ import print_function
from __future__ import unicode_literals
from collections import namedtuple
from platform import python_version_tuple
import re
import math
if python_version_tuple() >= ("3", "3", "0"):
from collections.abc import Iterable
else:
from collections import Iterable
if python_version_tuple()[0] < "3":
from itertools import izip_longest
from functools import partial
_none_type = type(None)
_bool_type = bool
_int_type = int
_long_type = long # noqa
_float_type = float
_text_type = unicode # noqa
_binary_type = str
def _is_file(f):
return hasattr(f, "read")
else:
from itertools import zip_longest as izip_longest
from functools import reduce, partial
_none_type = type(None)
_bool_type = bool
_int_type = int
_long_type = int
_float_type = float
_text_type = str
_binary_type = bytes
basestring = str
import io
def _is_file(f):
return isinstance(f, io.IOBase)
try:
import wcwidth # optional wide-character (CJK) support
except ImportError:
wcwidth = None
try:
from html import escape as htmlescape
except ImportError:
from cgi import escape as htmlescape
__all__ = ["tabulate", "tabulate_formats", "simple_separated_format"]
__version__ = "0.8.8"
# minimum extra space in headers
MIN_PADDING = 2
# Whether or not to preserve leading/trailing whitespace in data.
PRESERVE_WHITESPACE = False
_DEFAULT_FLOATFMT = "g"
_DEFAULT_MISSINGVAL = ""
# if True, enable wide-character (CJK) support
WIDE_CHARS_MODE = wcwidth is not None
Line = namedtuple("Line", ["begin", "hline", "sep", "end"])
DataRow = namedtuple("DataRow", ["begin", "sep", "end"])
# A table structure is suppposed to be:
#
# --- lineabove ---------
# headerrow
# --- linebelowheader ---
# datarow
# --- linebewteenrows ---
# ... (more datarows) ...
# --- linebewteenrows ---
# last datarow
# --- linebelow ---------
#
# TableFormat's line* elements can be
#
# - either None, if the element is not used,
# - or a Line tuple,
# - or a function: [col_widths], [col_alignments] -> string.
#
# TableFormat's *row elements can be
#
# - either None, if the element is not used,
# - or a DataRow tuple,
# - or a function: [cell_values], [col_widths], [col_alignments] -> string.
#
# padding (an integer) is the amount of white space around data values.
#
# with_header_hide:
#
# - either None, to display all table elements unconditionally,
# - or a list of elements not to be displayed if the table has column headers.
#
TableFormat = namedtuple(
"TableFormat",
[
"lineabove",
"linebelowheader",
"linebetweenrows",
"linebelow",
"headerrow",
"datarow",
"padding",
"with_header_hide",
],
)
def _pipe_segment_with_colons(align, colwidth):
"""Return a segment of a horizontal line with optional colons which
indicate column's alignment (as in `pipe` output format)."""
w = colwidth
if align in ["right", "decimal"]:
return ("-" * (w - 1)) + ":"
elif align == "center":
return ":" + ("-" * (w - 2)) + ":"
elif align == "left":
return ":" + ("-" * (w - 1))
else:
return "-" * w
def _pipe_line_with_colons(colwidths, colaligns):
"""Return a horizontal line with optional colons to indicate column's
alignment (as in `pipe` output format)."""
if not colaligns: # e.g. printing an empty data frame (github issue #15)
colaligns = [""] * len(colwidths)
segments = [_pipe_segment_with_colons(a, w) for a, w in zip(colaligns, colwidths)]
return "|" + "|".join(segments) + "|"
def _mediawiki_row_with_attrs(separator, cell_values, colwidths, colaligns):
alignment = {
"left": "",
"right": 'align="right"| ',
"center": 'align="center"| ',
"decimal": 'align="right"| ',
}
# hard-coded padding _around_ align attribute and value together
# rather than padding parameter which affects only the value
values_with_attrs = [
" " + alignment.get(a, "") + c + " " for c, a in zip(cell_values, colaligns)
]
colsep = separator * 2
return (separator + colsep.join(values_with_attrs)).rstrip()
def _textile_row_with_attrs(cell_values, colwidths, colaligns):
cell_values[0] += " "
alignment = {"left": "<.", "right": ">.", "center": "=.", "decimal": ">."}
values = (alignment.get(a, "") + v for a, v in zip(colaligns, cell_values))
return "|" + "|".join(values) + "|"
def _html_begin_table_without_header(colwidths_ignore, colaligns_ignore):
# this table header will be suppressed if there is a header row
return "<table>\n<tbody>"
def _html_row_with_attrs(celltag, unsafe, cell_values, colwidths, colaligns):
alignment = {
"left": "",
"right": ' style="text-align: right;"',
"center": ' style="text-align: center;"',
"decimal": ' style="text-align: right;"',
}
if unsafe:
values_with_attrs = [
"<{0}{1}>{2}</{0}>".format(celltag, alignment.get(a, ""), c)
for c, a in zip(cell_values, colaligns)
]
else:
values_with_attrs = [
"<{0}{1}>{2}</{0}>".format(celltag, alignment.get(a, ""), htmlescape(c))
for c, a in zip(cell_values, colaligns)
]
rowhtml = "<tr>{}</tr>".format("".join(values_with_attrs).rstrip())
if celltag == "th": # it's a header row, create a new table header
rowhtml = "<table>\n<thead>\n{}\n</thead>\n<tbody>".format(rowhtml)
return rowhtml
def _moin_row_with_attrs(celltag, cell_values, colwidths, colaligns, header=""):
alignment = {
"left": "",
"right": '<style="text-align: right;">',
"center": '<style="text-align: center;">',
"decimal": '<style="text-align: right;">',
}
values_with_attrs = [
"{0}{1} {2} ".format(celltag, alignment.get(a, ""), header + c + header)
for c, a in zip(cell_values, colaligns)
]
return "".join(values_with_attrs) + "||"
def _latex_line_begin_tabular(colwidths, colaligns, booktabs=False):
alignment = {"left": "l", "right": "r", "center": "c", "decimal": "r"}
tabular_columns_fmt = "".join([alignment.get(a, "l") for a in colaligns])
return "\n".join(
[
"\\begin{tabular}{" + tabular_columns_fmt + "}",
"\\toprule" if booktabs else "\\hline",
]
)
LATEX_ESCAPE_RULES = {
r"&": r"\&",
r"%": r"\%",
r"$": r"\$",
r"#": r"\#",
r"_": r"\_",
r"^": r"\^{}",
r"{": r"\{",
r"}": r"\}",
r"~": r"\textasciitilde{}",
"\\": r"\textbackslash{}",
r"<": r"\ensuremath{<}",
r">": r"\ensuremath{>}",
}
def _latex_row(cell_values, colwidths, colaligns, escrules=LATEX_ESCAPE_RULES):
def escape_char(c):
return escrules.get(c, c)
escaped_values = ["".join(map(escape_char, cell)) for cell in cell_values]
rowfmt = DataRow("", "&", "\\\\")
return _build_simple_row(escaped_values, rowfmt)
def _rst_escape_first_column(rows, headers):
def escape_empty(val):
if isinstance(val, (_text_type, _binary_type)) and not val.strip():
return ".."
else:
return val
new_headers = list(headers)
new_rows = []
if headers:
new_headers[0] = escape_empty(headers[0])
for row in rows:
new_row = list(row)
if new_row:
new_row[0] = escape_empty(row[0])
new_rows.append(new_row)
return new_rows, new_headers
_table_formats = {
"simple": TableFormat(
lineabove=Line("", "-", " ", ""),
linebelowheader=Line("", "-", " ", ""),
linebetweenrows=None,
linebelow=Line("", "-", " ", ""),
headerrow=DataRow("", " ", ""),
datarow=DataRow("", " ", ""),
padding=0,
with_header_hide=["lineabove", "linebelow"],
),
"plain": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("", " ", ""),
datarow=DataRow("", " ", ""),
padding=0,
with_header_hide=None,
),
"grid": TableFormat(
lineabove=Line("+", "-", "+", "+"),
linebelowheader=Line("+", "=", "+", "+"),
linebetweenrows=Line("+", "-", "+", "+"),
linebelow=Line("+", "-", "+", "+"),
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"fancy_grid": TableFormat(
lineabove=Line("╒", "═", "╤", "╕"),
linebelowheader=Line("╞", "═", "╪", "╡"),
linebetweenrows=Line("├", "─", "┼", "┤"),
linebelow=Line("╘", "═", "╧", "╛"),
headerrow=DataRow("│", "│", "│"),
datarow=DataRow("│", "│", "│"),
padding=1,
with_header_hide=None,
),
"github": TableFormat(
lineabove=Line("|", "-", "|", "|"),
linebelowheader=Line("|", "-", "|", "|"),
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=["lineabove"],
),
"pipe": TableFormat(
lineabove=_pipe_line_with_colons,
linebelowheader=_pipe_line_with_colons,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=["lineabove"],
),
"orgtbl": TableFormat(
lineabove=None,
linebelowheader=Line("|", "-", "+", "|"),
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"jira": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("||", "||", "||"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"presto": TableFormat(
lineabove=None,
linebelowheader=Line("", "-", "+", ""),
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("", "|", ""),
datarow=DataRow("", "|", ""),
padding=1,
with_header_hide=None,
),
"pretty": TableFormat(
lineabove=Line("+", "-", "+", "+"),
linebelowheader=Line("+", "-", "+", "+"),
linebetweenrows=None,
linebelow=Line("+", "-", "+", "+"),
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"psql": TableFormat(
lineabove=Line("+", "-", "+", "+"),
linebelowheader=Line("|", "-", "+", "|"),
linebetweenrows=None,
linebelow=Line("+", "-", "+", "+"),
headerrow=DataRow("|", "|", "|"),
datarow=DataRow("|", "|", "|"),
padding=1,
with_header_hide=None,
),
"rst": TableFormat(
lineabove=Line("", "=", " ", ""),
linebelowheader=Line("", "=", " ", ""),
linebetweenrows=None,
linebelow=Line("", "=", " ", ""),
headerrow=DataRow("", " ", ""),
datarow=DataRow("", " ", ""),
padding=0,
with_header_hide=None,
),
"mediawiki": TableFormat(
lineabove=Line(
'{| class="wikitable" style="text-align: left;"',
"",
"",
"\n|+ <!-- caption -->\n|-",
),
linebelowheader=Line("|-", "", "", ""),
linebetweenrows=Line("|-", "", "", ""),
linebelow=Line("|}", "", "", ""),
headerrow=partial(_mediawiki_row_with_attrs, "!"),
datarow=partial(_mediawiki_row_with_attrs, "|"),
padding=0,
with_header_hide=None,
),
"moinmoin": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=partial(_moin_row_with_attrs, "||", header="'''"),
datarow=partial(_moin_row_with_attrs, "||"),
padding=1,
with_header_hide=None,
),
"youtrack": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|| ", " || ", " || "),
datarow=DataRow("| ", " | ", " |"),
padding=1,
with_header_hide=None,
),
"html": TableFormat(
lineabove=_html_begin_table_without_header,
linebelowheader="",
linebetweenrows=None,
linebelow=Line("</tbody>\n</table>", "", "", ""),
headerrow=partial(_html_row_with_attrs, "th", False),
datarow=partial(_html_row_with_attrs, "td", False),
padding=0,
with_header_hide=["lineabove"],
),
"unsafehtml": TableFormat(
lineabove=_html_begin_table_without_header,
linebelowheader="",
linebetweenrows=None,
linebelow=Line("</tbody>\n</table>", "", "", ""),
headerrow=partial(_html_row_with_attrs, "th", True),
datarow=partial(_html_row_with_attrs, "td", True),
padding=0,
with_header_hide=["lineabove"],
),
"latex": TableFormat(
lineabove=_latex_line_begin_tabular,
linebelowheader=Line("\\hline", "", "", ""),
linebetweenrows=None,
linebelow=Line("\\hline\n\\end{tabular}", "", "", ""),
headerrow=_latex_row,
datarow=_latex_row,
padding=1,
with_header_hide=None,
),
"latex_raw": TableFormat(
lineabove=_latex_line_begin_tabular,
linebelowheader=Line("\\hline", "", "", ""),
linebetweenrows=None,
linebelow=Line("\\hline\n\\end{tabular}", "", "", ""),
headerrow=partial(_latex_row, escrules={}),
datarow=partial(_latex_row, escrules={}),
padding=1,
with_header_hide=None,
),
"latex_booktabs": TableFormat(
lineabove=partial(_latex_line_begin_tabular, booktabs=True),
linebelowheader=Line("\\midrule", "", "", ""),
linebetweenrows=None,
linebelow=Line("\\bottomrule\n\\end{tabular}", "", "", ""),
headerrow=_latex_row,
datarow=_latex_row,
padding=1,
with_header_hide=None,
),
"tsv": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("", "\t", ""),
datarow=DataRow("", "\t", ""),
padding=0,
with_header_hide=None,
),
"textile": TableFormat(
lineabove=None,
linebelowheader=None,
linebetweenrows=None,
linebelow=None,
headerrow=DataRow("|_. ", "|_.", "|"),
datarow=_textile_row_with_attrs,
padding=1,
with_header_hide=None,
),
}
tabulate_formats = list(sorted(_table_formats.keys()))
# The table formats for which multiline cells will be folded into subsequent
# table rows. The key is the original format specified at the API. The value is
# the format that will be used to represent the original format.
multiline_formats = {
"plain": "plain",
"simple": "simple",
"grid": "grid",
"fancy_grid": "fancy_grid",
"pipe": "pipe",
"orgtbl": "orgtbl",
"jira": "jira",
"presto": "presto",
"pretty": "pretty",
"psql": "psql",
"rst": "rst",
}
# TODO: Add multiline support for the remaining table formats:
# - mediawiki: Replace \n with <br>
# - moinmoin: TBD
# - youtrack: TBD
# - html: Replace \n with <br>
# - latex*: Use "makecell" package: In header, replace X\nY with
# \thead{X\\Y} and in data row, replace X\nY with \makecell{X\\Y}
# - tsv: TBD
# - textile: Replace \n with <br/> (must be well-formed XML)
_multiline_codes = re.compile(r"\r|\n|\r\n")
_multiline_codes_bytes = re.compile(b"\r|\n|\r\n")
_invisible_codes = re.compile(
r"\x1b\[\d+[;\d]*m|\x1b\[\d*\;\d*\;\d*m"
) # ANSI color codes
_invisible_codes_bytes = re.compile(
b"\x1b\\[\\d+\\[;\\d]*m|\x1b\\[\\d*;\\d*;\\d*m"
) # ANSI color codes
def simple_separated_format(separator):
"""Construct a simple TableFormat with columns separated by a separator.
>>> tsv = simple_separated_format("\\t") ; \
tabulate([["foo", 1], ["spam", 23]], tablefmt=tsv) == 'foo \\t 1\\nspam\\t23'
True
"""
return TableFormat(
None,
None,
None,
None,
headerrow=DataRow("", separator, ""),
datarow=DataRow("", separator, ""),
padding=0,
with_header_hide=None,
)
def _isconvertible(conv, string):
try:
conv(string)
return True
except (ValueError, TypeError):
return False
def _isnumber(string):
"""
>>> _isnumber("123.45")
True
>>> _isnumber("123")
True
>>> _isnumber("spam")
False
>>> _isnumber("123e45678")
False
>>> _isnumber("inf")
True
"""
if not _isconvertible(float, string):
return False
elif isinstance(string, (_text_type, _binary_type)) and (
math.isinf(float(string)) or math.isnan(float(string))
):
return string.lower() in ["inf", "-inf", "nan"]
return True
def _isint(string, inttype=int):
"""
>>> _isint("123")
True
>>> _isint("123.45")
False
"""
return (
type(string) is inttype
or (isinstance(string, _binary_type) or isinstance(string, _text_type))
and _isconvertible(inttype, string)
)
def _isbool(string):
"""
>>> _isbool(True)
True
>>> _isbool("False")
True
>>> _isbool(1)
False
"""
return type(string) is _bool_type or (
isinstance(string, (_binary_type, _text_type)) and string in ("True", "False")
)
def _type(string, has_invisible=True, numparse=True):
"""The least generic type (type(None), int, float, str, unicode).
>>> _type(None) is type(None)
True
>>> _type("foo") is type("")
True
>>> _type("1") is type(1)
True
>>> _type('\x1b[31m42\x1b[0m') is type(42)
True
>>> _type('\x1b[31m42\x1b[0m') is type(42)
True
"""
if has_invisible and (
isinstance(string, _text_type) or isinstance(string, _binary_type)
):
string = _strip_invisible(string)
if string is None:
return _none_type
elif hasattr(string, "isoformat"): # datetime.datetime, date, and time
return _text_type
elif _isbool(string):
return _bool_type
elif _isint(string) and numparse:
return int
elif _isint(string, _long_type) and numparse:
return int
elif _isnumber(string) and numparse:
return float
elif isinstance(string, _binary_type):
return _binary_type
else:
return _text_type
def _afterpoint(string):
"""Symbols after a decimal point, -1 if the string lacks the decimal point.
>>> _afterpoint("123.45")
2
>>> _afterpoint("1001")
-1
>>> _afterpoint("eggs")
-1
>>> _afterpoint("123e45")
2
"""
if _isnumber(string):
if _isint(string):
return -1
else:
pos = string.rfind(".")
pos = string.lower().rfind("e") if pos < 0 else pos
if pos >= 0:
return len(string) - pos - 1
else:
return -1 # no point
else:
return -1 # not a number
def _padleft(width, s):
"""Flush right.
>>> _padleft(6, '\u044f\u0439\u0446\u0430') == ' \u044f\u0439\u0446\u0430'
True
"""
fmt = "{0:>%ds}" % width
return fmt.format(s)
def _padright(width, s):
"""Flush left.
>>> _padright(6, '\u044f\u0439\u0446\u0430') == '\u044f\u0439\u0446\u0430 '
True
"""
fmt = "{0:<%ds}" % width
return fmt.format(s)
def _padboth(width, s):
"""Center string.
>>> _padboth(6, '\u044f\u0439\u0446\u0430') == ' \u044f\u0439\u0446\u0430 '
True
"""
fmt = "{0:^%ds}" % width
return fmt.format(s)
def _padnone(ignore_width, s):
return s
def _strip_invisible(s):
"Remove invisible ANSI color codes."
if isinstance(s, _text_type):
return re.sub(_invisible_codes, "", s)
else: # a bytestring
return re.sub(_invisible_codes_bytes, "", s)
def _visible_width(s):
"""Visible width of a printed string. ANSI color codes are removed.
>>> _visible_width('\x1b[31mhello\x1b[0m'), _visible_width("world")
(5, 5)
"""
# optional wide-character support
if wcwidth is not None and WIDE_CHARS_MODE:
len_fn = wcwidth.wcswidth
else:
len_fn = len
if isinstance(s, _text_type) or isinstance(s, _binary_type):
return len_fn(_strip_invisible(s))
else:
return len_fn(_text_type(s))
def _is_multiline(s):
if isinstance(s, _text_type):
return bool(re.search(_multiline_codes, s))
else: # a bytestring
return bool(re.search(_multiline_codes_bytes, s))
def _multiline_width(multiline_s, line_width_fn=len):
"""Visible width of a potentially multiline content."""
return max(map(line_width_fn, re.split("[\r\n]", multiline_s)))
def _choose_width_fn(has_invisible, enable_widechars, is_multiline):
"""Return a function to calculate visible cell width."""
if has_invisible:
line_width_fn = _visible_width
elif enable_widechars: # optional wide-character support if available
line_width_fn = wcwidth.wcswidth
else:
line_width_fn = len
if is_multiline:
width_fn = lambda s: _multiline_width(s, line_width_fn) # noqa
else:
width_fn = line_width_fn
return width_fn
def _align_column_choose_padfn(strings, alignment, has_invisible):
if alignment == "right":
if not PRESERVE_WHITESPACE:
strings = [s.strip() for s in strings]
padfn = _padleft
elif alignment == "center":
if not PRESERVE_WHITESPACE:
strings = [s.strip() for s in strings]
padfn = _padboth
elif alignment == "decimal":
if has_invisible:
decimals = [_afterpoint(_strip_invisible(s)) for s in strings]
else:
decimals = [_afterpoint(s) for s in strings]
maxdecimals = max(decimals)
strings = [s + (maxdecimals - decs) * " " for s, decs in zip(strings, decimals)]
padfn = _padleft
elif not alignment:
padfn = _padnone
else:
if not PRESERVE_WHITESPACE:
strings = [s.strip() for s in strings]
padfn = _padright
return strings, padfn
def _align_column(
strings,
alignment,
minwidth=0,
has_invisible=True,
enable_widechars=False,
is_multiline=False,
):
"""[string] -> [padded_string]"""
strings, padfn = _align_column_choose_padfn(strings, alignment, has_invisible)
width_fn = _choose_width_fn(has_invisible, enable_widechars, is_multiline)
s_widths = list(map(width_fn, strings))
maxwidth = max(max(s_widths), minwidth)
# TODO: refactor column alignment in single-line and multiline modes
if is_multiline:
if not enable_widechars and not has_invisible:
padded_strings = [
"\n".join([padfn(maxwidth, s) for s in ms.splitlines()])
for ms in strings
]
else:
# enable wide-character width corrections
s_lens = [max((len(s) for s in re.split("[\r\n]", ms))) for ms in strings]
visible_widths = [maxwidth - (w - l) for w, l in zip(s_widths, s_lens)]
# wcswidth and _visible_width don't count invisible characters;
# padfn doesn't need to apply another correction
padded_strings = [
"\n".join([padfn(w, s) for s in (ms.splitlines() or ms)])
for ms, w in zip(strings, visible_widths)
]
else: # single-line cell values
if not enable_widechars and not has_invisible:
padded_strings = [padfn(maxwidth, s) for s in strings]
else:
# enable wide-character width corrections
s_lens = list(map(len, strings))
visible_widths = [maxwidth - (w - l) for w, l in zip(s_widths, s_lens)]
# wcswidth and _visible_width don't count invisible characters;
# padfn doesn't need to apply another correction
padded_strings = [padfn(w, s) for s, w in zip(strings, visible_widths)]
return padded_strings
def _more_generic(type1, type2):
types = {
_none_type: 0,
_bool_type: 1,
int: 2,
float: 3,
_binary_type: 4,
_text_type: 5,
}
invtypes = {
5: _text_type,
4: _binary_type,
3: float,
2: int,
1: _bool_type,
0: _none_type,
}
moregeneric = max(types.get(type1, 5), types.get(type2, 5))
return invtypes[moregeneric]
def _column_type(strings, has_invisible=True, numparse=True):
"""The least generic type all column values are convertible to.
>>> _column_type([True, False]) is _bool_type
True
>>> _column_type(["1", "2"]) is _int_type
True
>>> _column_type(["1", "2.3"]) is _float_type
True
>>> _column_type(["1", "2.3", "four"]) is _text_type
True
>>> _column_type(["four", '\u043f\u044f\u0442\u044c']) is _text_type
True
>>> _column_type([None, "brux"]) is _text_type
True
>>> _column_type([1, 2, None]) is _int_type
True
>>> import datetime as dt
>>> _column_type([dt.datetime(1991,2,19), dt.time(17,35)]) is _text_type
True
"""
types = [_type(s, has_invisible, numparse) for s in strings]
return reduce(_more_generic, types, _bool_type)
def _format(val, valtype, floatfmt, missingval="", has_invisible=True):
"""Format a value accoding to its type.
Unicode is supported:
>>> hrow = ['\u0431\u0443\u043a\u0432\u0430', '\u0446\u0438\u0444\u0440\u0430'] ; \
tbl = [['\u0430\u0437', 2], ['\u0431\u0443\u043a\u0438', 4]] ; \
good_result = '\\u0431\\u0443\\u043a\\u0432\\u0430 \\u0446\\u0438\\u0444\\u0440\\u0430\\n------- -------\\n\\u0430\\u0437 2\\n\\u0431\\u0443\\u043a\\u0438 4' ; \
tabulate(tbl, headers=hrow) == good_result
True
""" # noqa
if val is None:
return missingval
if valtype in [int, _text_type]:
return "{0}".format(val)
elif valtype is _binary_type:
try:
return _text_type(val, "ascii")
except TypeError:
return _text_type(val)
elif valtype is float:
is_a_colored_number = has_invisible and isinstance(
val, (_text_type, _binary_type)
)
if is_a_colored_number:
raw_val = _strip_invisible(val)
formatted_val = format(float(raw_val), floatfmt)
return val.replace(raw_val, formatted_val)
else:
return format(float(val), floatfmt)
else:
return "{0}".format(val)
def _align_header(
header, alignment, width, visible_width, is_multiline=False, width_fn=None
):
"Pad string header to width chars given known visible_width of the header."
if is_multiline:
header_lines = re.split(_multiline_codes, header)
padded_lines = [
_align_header(h, alignment, width, width_fn(h)) for h in header_lines
]
return "\n".join(padded_lines)
# else: not multiline
ninvisible = len(header) - visible_width
width += ninvisible
if alignment == "left":
return _padright(width, header)
elif alignment == "center":
return _padboth(width, header)
elif not alignment:
return "{0}".format(header)
else:
return _padleft(width, header)
def _prepend_row_index(rows, index):
"""Add a left-most index column."""
if index is None or index is False:
return rows
if len(index) != len(rows):
print("index=", index)
print("rows=", rows)
raise ValueError("index must be as long as the number of data rows")
rows = [[v] + list(row) for v, row in zip(index, rows)]
return rows
def _bool(val):
"A wrapper around standard bool() which doesn't throw on NumPy arrays"
try:
return bool(val)
except ValueError: # val is likely to be a numpy array with many elements
return False
def _normalize_tabular_data(tabular_data, headers, showindex="default"):
"""Transform a supported data type to a list of lists, and a list of headers.
Supported tabular data types:
* list-of-lists or another iterable of iterables
* list of named tuples (usually used with headers="keys")
* list of dicts (usually used with headers="keys")
* list of OrderedDicts (usually used with headers="keys")
* 2D NumPy arrays
* NumPy record arrays (usually used with headers="keys")
* dict of iterables (usually used with headers="keys")
* pandas.DataFrame (usually used with headers="keys")
The first row can be used as headers if headers="firstrow",
column indices can be used as headers if headers="keys".
If showindex="default", show row indices of the pandas.DataFrame.
If showindex="always", show row indices for all types of data.