导入需要的模块

from docx import Document
from docx.enum.text import WD_PARAGRAPH_ALIGNMENT
from docx.oxml.ns import qn
from docx.shared import Pt, RGBColor

1.打开word文档

"""变量名可以自定义"""
document = Document()

2.在正文应用字符样式(字体，大小，颜色)

# 设置正文字型 英文字型：Times New Roman; 中文字型：宋体
document.styles['Normal'].font.name = 'Times New Roman'
document.styles['Normal']._element.rPr.rFonts.set(qn('w:eastAsia'), u'宋体')
# 设置正文字体大小
document.styles['Normal'].font.size = Pt(12)
# 设置正文字体颜色
document.styles['Normal'].font.color.rgb = RGBColor(0, 0, 0)

3.添加标题和段落

使用add_heading()方法添加标题

不推荐使用，标题格式比较特殊还需要后续处理。

content是要添加的内容。

level代表word文档内的标题等级，从0开始。

document.add_heading('content', level=1)

使用add_paragraph()方法添加段落

p_1 = document.add_paragraph('床前明月光\n疑是地上霜\n举头望明月\n低头思故乡', style='')

style设置段落样式，有两种类型：

①List Bullet：项目符号

②List Number：列表编号

4.设置段落对齐方式

paragraph.alignment = WD_ALIGN_PARAGRAPH.CENTER

这里使用了CENTER这个枚举值。

5.设置粗体和斜体 

这里引用一下官方文档的说明：

In order to understand how bold(粗体) and italic(斜体) work, you need to understand a little about what goes on inside a paragraph. The short version is this:

1. A paragraph holds all the block-level(块级元素) formatting, like indentation(缩进), line height, tabs, and so forth.
2. Character-level formatting, such as bold and italic, are applied at the run level(运行级别). All content within a paragraph must be within a run, but there can be more than one. So a paragraph with a bold word in the middle would need three runs, a normal one, a bold one containing the word, and another normal one for the text after.

When you add a paragraph by providing text to the method, it gets put into a single run. You can add more using the method on the paragraph:.add_paragraph().add_run()

 为此需要设置第一次运行的正常文本，这个文本可以为空。

P = document.add_paragraph('')
run = P.add_run("静夜思")
run.font.color.rgb = RGBColor(255, 0, 0)
run.font.size = Pt(14)
run.bold = True
P.alignment = WD_PARAGRAPH_ALIGNMENT.CENTER

 6.指定路径并保存文件

filename = '静夜思'
document.save('D:\桌面\{}.docx'.format(filename))

7.最终效果

 附图1——字号磅值对应表

附图2——常用颜色RGB值对照表