问题
I am trying to change the formatting for multiple paragraphs using Python's python-docx module.
from docx import Document
from docx.shared import Pt
from docx.shared import Inches
from docx.enum.text import WD_PARAGRAPH_ALIGNMENT
from docx.enum.section import WD_ORIENTATION
from content import report_content, provinces, report_date, introduction, intro_content
alignment_dict = {'justify': WD_PARAGRAPH_ALIGNMENT.JUSTIFY,
'center': WD_PARAGRAPH_ALIGNMENT.CENTER,
'centre': WD_PARAGRAPH_ALIGNMENT.CENTER,
'right': WD_PARAGRAPH_ALIGNMENT.RIGHT,
'left': WD_PARAGRAPH_ALIGNMENT.LEFT}
orientation_dict = {'portrait': WD_ORIENTATION.PORTRAIT,
'landscape': WD_ORIENTATION.LANDSCAPE}
document = Document()
def change_orientation(orientation='portrait', set_left_margin=1.0, set_right_margin=1.0):
section = document.sections[-1]
new_width, new_height = section.page_height, section.page_width
section.orientation = orientation_dict[orientation]
section.page_width = new_width
section.page_height = new_height
section.left_margin = Inches(set_left_margin)
section.right_margin = Inches(set_right_margin)
def add_logo(path, align):
document.add_picture(path, width=Inches(4.5), height=Inches(1.5))
last_paragraph = document.paragraphs[-1]
last_paragraph.alignment = alignment_dict[align]
def add_content(content, space_after, font_name='Arial', font_size=11, line_spacing=0, space_before=0,
align='justify', keep_together=True, keep_with_next=False, page_break_before=False,
widow_control=False, set_bold=False, set_italic=False, set_underline=False, set_all_caps=False):
paragraph = document.add_paragraph(content)
style = document.styles['Normal']
font = style.font
font.name = font_name
font.size = Pt(font_size)
font.bold = set_bold
font.italic = set_italic
font.all_caps = set_all_caps
font.underline = set_underline
paragraph_format = paragraph.paragraph_format
paragraph_format.alignment = alignment_dict.get(align.lower())
paragraph_format.space_before = Pt(space_before)
paragraph_format.space_after = Pt(space_after)
paragraph_format.line_spacing = line_spacing
paragraph_format.keep_together = keep_together
paragraph_format.keep_with_next = keep_with_next
paragraph_format.page_break_before = page_break_before
paragraph_format.widow_control = widow_control
def create_numbered_list():
pass
def add_subheading(subheading, level):
document.add_heading(subheading, level)
change_orientation(orientation='landscape', set_left_margin=0.5, set_right_margin=0.5)
add_logo('logo.png', 'center')
add_content(report_content, align='Center', space_before=40, space_after=20, line_spacing=1, font_name='Arial',
set_bold=True, set_all_caps=True)
add_content(provinces, align='Center', space_before=20, space_after=20, line_spacing=1, font_name='Arial',
set_bold=True, set_all_caps=True)
add_content(report_date, align='Center', space_before=20, space_after=20, line_spacing=1, font_name='Arial',
set_bold=True, set_all_caps=True)
document.add_page_break()
add_subheading(introduction, level=1)
add_content(intro_content, space_after=20, space_before=20)
document.save('demo.docx')
The problem is every time I add formatting to a new paragraph block via the add_content method the formatting for the older blocks gets changed as the formatting for the current block.
Why am I not being able to retain the formatting, why does it get reset to the formatting of the latest block?
回答1:
Try this code. use add_style to add new style. document.styles['Normal'] is a system style I test it ok
from docx.enum.style import WD_STYLE_TYPE
#.........................
def add_content(content, space_after, font_name='Arial', font_size=16, line_spacing=0, space_before=0,
align='justify', keep_together=True, keep_with_next=False, page_break_before=False,
widow_control=False, set_bold=False, set_italic=False, set_underline=False, set_all_caps=False,style_name=""):
paragraph = document.add_paragraph(content)
paragraph.style = document.styles.add_style(style_name, WD_STYLE_TYPE.PARAGRAPH)
font = paragraph.style.font
font.name = font_name
font.size = Pt(font_size)
font.bold = set_bold
font.italic = set_italic
font.all_caps = set_all_caps
font.underline = set_underline
paragraph_format = paragraph.paragraph_format
paragraph_format.alignment = alignment_dict.get(align.lower())
paragraph_format.space_before = Pt(space_before)
paragraph_format.space_after = Pt(space_after)
paragraph_format.line_spacing = line_spacing
paragraph_format.keep_together = keep_together
paragraph_format.keep_with_next = keep_with_next
paragraph_format.page_break_before = page_break_before
paragraph_format.widow_control = widow_control
add_content("1234", align='Center', space_before=40, space_after=20, line_spacing=1, font_name='Arial', font_size=16,
set_bold=True, set_all_caps=True,style_name ="Normal1")
add_content("12345", align='Center', space_before=20, space_after=20, line_spacing=1, font_name='Arial',font_size=14,
set_bold=True, set_all_caps=True,style_name ="Normal2")
回答2:
Your problem is here:
style = document.styles['Normal']
font = style.font
A style applies to all paragraphs that have that style. It's a document global thing. So any change you make the style.font affect all paragraphs with that style (which is all your paragraphs in this case).
Make sure you read this page in the documentation and the one that follows it:
http://python-docx.readthedocs.io/en/latest/user/styles-understanding.html
Character formatting (e.g. bold, size, typeface) happens at the run level (below paragraph, a paragraph is composed of runs). So if you want to apply character formatting directly, as opposed to by using a style, you need to do it to each run.
Adding content to a paragraph by calling document.add_paragraph(content) places all that content in a single run. So a quick fix might be:
font = paragraph.runs[0].font
Might be worth a try. But probably also a good idea to spend a little time with the concepts parts of the documentation to understand the Word object model a bit better. It's pretty complex for what seems on the surface to be a simple thing. This page is a good place to start:
http://python-docx.readthedocs.io/en/latest/user/text.html
来源：https://stackoverflow.com/questions/48150222/changing-paragraph-formatting-in-python-docx