KLucenの启示录

1
file = open('致橡树.txt', 'r', encoding='utf-8')
2
print(file.read())
3
file.close()

1
file = open('致橡树.txt', 'r', encoding='utf-8')
2
for line in file:
3
    print(line, end='')
4
file.close()
5

6
file = open('致橡树.txt', 'r', encoding='utf-8')
7
lines = file.readlines()
8
for line in lines:
9
    print(line, end='')
10
file.close()

1
file = open('致橡树.txt', 'a', encoding='utf-8')
2
file.write('\n标题：《致橡树》')
3
file.write('\n作者：舒婷')
4
file.write('\n时间：1977年3月')
5
file.close()

1
file = None
2
try:
3
    file = open('致橡树.txt', 'r', encoding='utf-8')
4
    print(file.read())
5
except FileNotFoundError:
6
    print('无法打开指定的文件!')
7
except LookupError:
8
    print('指定了未知的编码!')
9
except UnicodeDecodeError:
10
    print('读取文件时解码错误!')
11
finally:
12
    if file:
13
        file.close()

1
BaseException
2
 +-- SystemExit
3
 +-- KeyboardInterrupt
4
 +-- GeneratorExit
5
 +-- Exception
6
      +-- StopIteration
7
      +-- StopAsyncIteration
8
      +-- ArithmeticError
9
      |    +-- FloatingPointError
10
      |    +-- OverflowError
11
      |    +-- ZeroDivisionError
12
      +-- AssertionError
13
      +-- AttributeError
14
      +-- BufferError
15
      +-- EOFError
16
      +-- ImportError
17
      |    +-- ModuleNotFoundError
18
      +-- LookupError
19
      |    +-- IndexError
20
      |    +-- KeyError
21
      +-- MemoryError
22
      +-- NameError
23
      |    +-- UnboundLocalError
24
      +-- OSError
25
      |    +-- BlockingIOError
26
      |    +-- ChildProcessError
27
      |    +-- ConnectionError
28
      |    |    +-- BrokenPipeError
29
      |    |    +-- ConnectionAbortedError
30
      |    |    +-- ConnectionRefusedError
31
      |    |    +-- ConnectionResetError
32
      |    +-- FileExistsError
33
      |    +-- FileNotFoundError
34
      |    +-- InterruptedError
35
      |    +-- IsADirectoryError
36
      |    +-- NotADirectoryError
37
      |    +-- PermissionError
38
      |    +-- ProcessLookupError
39
      |    +-- TimeoutError
40
      +-- ReferenceError
41
      +-- RuntimeError
42
      |    +-- NotImplementedError
43
      |    +-- RecursionError
44
      +-- SyntaxError
45
      |    +-- IndentationError
46
      |         +-- TabError
47
      +-- SystemError
48
      +-- TypeError
49
      +-- ValueError
50
      |    +-- UnicodeError
51
      |         +-- UnicodeDecodeError
52
      |         +-- UnicodeEncodeError
53
      |         +-- UnicodeTranslateError
54
      +-- Warning
55
           +-- DeprecationWarning
56
           +-- PendingDeprecationWarning
57
           +-- RuntimeWarning
58
           +-- SyntaxWarning
59
           +-- UserWarning
60
           +-- FutureWarning
61
           +-- ImportWarning
62
           +-- UnicodeWarning
63
           +-- BytesWarning
64
           +-- ResourceWarning

1
class InputError(ValueError):
2
    """自定义异常类型"""
3
    pass
4

5

6
def fac(num):
7
    """求阶乘"""
8
    if num < 0:
9
        raise InputError('只能计算非负整数的阶乘')
10
    if num in (0, 1):
11
        return 1
12
    return num * fac(num - 1)

1
flag = True
2
while flag:
3
    num = int(input('n = '))
4
    try:
5
        print(f'{num}! = {fac(num)}')
6
        flag = False
7
    except InputError as err:
8
        print(err)

1
try:
2
    with open('致橡树.txt', 'r', encoding='utf-8') as file:
3
        print(file.read())
4
except FileNotFoundError:
5
    print('无法打开指定的文件!')
6
except LookupError:
7
    print('指定了未知的编码!')
8
except UnicodeDecodeError:
9
    print('读取文件时解码错误!')

1
try:
2
    with open('guido.jpg', 'rb') as file1:
3
        data = file1.read()
4
    with open('吉多.jpg', 'wb') as file2:
5
        file2.write(data)
6
except FileNotFoundError:
7
    print('指定的文件无法打开.')
8
except IOError:
9
    print('读写文件时出现错误.')
10
print('程序执行结束.')

1
try:
2
    with open('guido.jpg', 'rb') as file1, open('吉多.jpg', 'wb') as file2:
3
        data = file1.read(512)
4
        while data:
5
            file2.write(data)
6
            data = file1.read()
7
except FileNotFoundError:
8
    print('指定的文件无法打开.')
9
except IOError:
10
    print('读写文件时出现错误.')
11
print('程序执行结束.')

1
{
2
    name: "骆昊",
3
    age: 40,
4
    friends: ["王大锤", "白元芳"],
5
    cars: [
6
        {"brand": "BMW", "max_speed": 240},
7
        {"brand": "Benz", "max_speed": 280},
8
        {"brand": "Audi", "max_speed": 280}
9
    ]
10
}

1
let obj = {
2
    name: "骆昊",
3
    age: 40,
4
    friends: ["王大锤", "白元芳"],
5
    cars: [
6
        {"brand": "BMW", "max_speed": 240},
7
        {"brand": "Benz", "max_speed": 280},
8
        {"brand": "Audi", "max_speed": 280}
9
    ]
10
}

1
import json
2

3
my_dict = {
4
    'name': '骆昊',
5
    'age': 40,
6
    'friends': ['王大锤', '白元芳'],
7
    'cars': [
8
        {'brand': 'BMW', 'max_speed': 240},
9
        {'brand': 'Audi', 'max_speed': 280},
10
        {'brand': 'Benz', 'max_speed': 280}
11
    ]
12
}
13
print(json.dumps(my_dict))

1
{"name": "\u9a86\u660a", "age": 40, "friends": ["\u738b\u5927\u9524", "\u767d\u5143\u82b3"], "cars": [{"brand": "BMW", "max_speed": 240}, {"brand": "Audi", "max_speed": 280}, {"brand": "Benz", "max_speed": 280}]}

1
import json
2

3
my_dict = {
4
    'name': '骆昊',
5
    'age': 40,
6
    'friends': ['王大锤', '白元芳'],
7
    'cars': [
8
        {'brand': 'BMW', 'max_speed': 240},
9
        {'brand': 'Audi', 'max_speed': 280},
10
        {'brand': 'Benz', 'max_speed': 280}
11
    ]
12
}
13
with open('data.json', 'w') as file:
14
    json.dump(my_dict, file)

1
import json
2

3
with open('data.json', 'r') as file:
4
    my_dict = json.load(file)
5
    print(type(my_dict))
6
    print(my_dict)

1
import requests
2

3
resp = requests.get('http://api.tianapi.com/guonei/?key=APIKey&num=10')
4
if resp.status_code == 200:
5
    data_model = resp.json()
6
    for news in data_model['newslist']:
7
        print(news['title'])
8
        print(news['url'])
9
        print('-' * 60)

1
import csv
2
import random
3

4
with open('scores.csv', 'w') as file:
5
    writer = csv.writer(file)
6
    writer.writerow(['姓名', '语文', '数学', '英语'])
7
    names = ['关羽', '张飞', '赵云', '马超', '黄忠']
8
    for name in names:
9
        scores = [random.randrange(50, 101) for _ in range(3)]
10
        scores.insert(0, name)
11
        writer.writerow(scores)

1
姓名,语文,数学,英语
2
关羽,98,86,61
3
张飞,86,58,80
4
赵云,95,73,70
5
马超,83,97,55
6
黄忠,61,54,87

1
writer = csv.writer(file, delimiter='|', quoting=csv.QUOTE_ALL)

1
"姓名"|"语文"|"数学"|"英语"
2
"关羽"|"88"|"64"|"65"
3
"张飞"|"76"|"93"|"79"
4
"赵云"|"78"|"55"|"76"
5
"马超"|"72"|"77"|"68"
6
"黄忠"|"70"|"72"|"51"

1
import csv
2

3
with open('scores.csv', 'r') as file:
4
    reader = csv.reader(file, delimiter='|')
5
    for data_list in reader:
6
        print(reader.line_num, end='\t')
7
        for elem in data_list:
8
            print(elem, end='\t')
9
        print()

1
import xlrd
2

3
# 使用xlrd模块的open_workbook函数打开指定Excel文件并获得Book对象（工作簿）
4
wb = xlrd.open_workbook('阿里巴巴2020年股票数据.xls')
5
# 通过Book对象的sheet_names方法可以获取所有表单名称
6
sheetnames = wb.sheet_names()
7
print(sheetnames)
8
# 通过指定的表单名称获取Sheet对象（工作表）
9
sheet = wb.sheet_by_name(sheetnames[0])
10
# 通过Sheet对象的nrows和ncols属性获取表单的行数和列数
11
print(sheet.nrows, sheet.ncols)
12
for row in range(sheet.nrows):
13
    for col in range(sheet.ncols):
14
        # 通过Sheet对象的cell方法获取指定Cell对象（单元格）
15
        # 通过Cell对象的value属性获取单元格中的值
16
        value = sheet.cell(row, col).value
17
        # 对除首行外的其他行进行数据格式化处理
18
        if row > 0:
19
            # 第1列的xldate类型先转成元组再格式化为“年月日”的格式
20
            if col == 0:
21
                # xldate_as_tuple函数的第二个参数只有0和1两个取值
22
                # 其中0代表以1900-01-01为基准的日期，1代表以1904-01-01为基准的日期
23
                value = xlrd.xldate_as_tuple(value, 0)
24
                value = f'{value[0]}年{value[1]:>02d}月{value[2]:>02d}日'
25
            # 其他列的number类型处理成小数点后保留两位有效数字的浮点数
26
            else:
27
                value = f'{value:.2f}'
28
        print(value, end='\t')
29
    print()
30
# 获取最后一个单元格的数据类型
31
# 0 - 空值，1 - 字符串，2 - 数字，3 - 日期，4 - 布尔，5 - 错误
32
last_cell_type = sheet.cell_type(sheet.nrows - 1, sheet.ncols - 1)
33
print(last_cell_type)
34
# 获取第一行的值（列表）
35
print(sheet.row_values(0))
36
# 获取指定行指定列范围的数据（列表）
37
# 第一个参数代表行索引，第二个和第三个参数代表列的开始（含）和结束（不含）索引
38
print(sheet.row_slice(3, 0, 5))

1
import random
2

3
import xlwt
4

5
student_names = ['关羽', '张飞', '赵云', '马超', '黄忠']
6
scores = [[random.randrange(50, 101) for _ in range(3)] for _ in range(5)]
7
# 创建工作簿对象（Workbook）
8
wb = xlwt.Workbook()
9
# 创建工作表对象（Worksheet）
10
sheet = wb.add_sheet('一年级二班')
11
# 添加表头数据
12
titles = ('姓名', '语文', '数学', '英语')
13
for index, title in enumerate(titles):
14
    sheet.write(0, index, title)
15
# 将学生姓名和考试成绩写入单元格
16
for row in range(len(scores)):
17
    sheet.write(row + 1, 0, student_names[row])
18
    for col in range(len(scores[row])):
19
        sheet.write(row + 1, col + 1, scores[row][col])
20
# 保存Excel工作簿
21
wb.save('考试成绩表.xls')

1
header_style = xlwt.XFStyle()
2
pattern = xlwt.Pattern()
3
pattern.pattern = xlwt.Pattern.SOLID_PATTERN
4
# 0 - 黑色、1 - 白色、2 - 红色、3 - 绿色、4 - 蓝色、5 - 黄色、6 - 粉色、7 - 青色
5
pattern.pattern_fore_colour = 5
6
header_style.pattern = pattern
7
titles = ('姓名', '语文', '数学', '英语')
8
for index, title in enumerate(titles):
9
    sheet.write(0, index, title, header_style)

1
font = xlwt.Font()
2
# 字体名称
3
font.name = '华文楷体'
4
# 字体大小（20是基准单位，18表示18px）
5
font.height = 20 * 18
6
# 是否使用粗体
7
font.bold = True
8
# 是否使用斜体
9
font.italic = False
10
# 字体颜色
11
font.colour_index = 1
12
header_style.font = font

1
align = xlwt.Alignment()
2
# 垂直方向的对齐方式
3
align.vert = xlwt.Alignment.VERT_CENTER
4
# 水平方向的对齐方式
5
align.horz = xlwt.Alignment.HORZ_CENTER
6
header_style.alignment = align

1
borders = xlwt.Borders()
2
props = (
3
    ('top', 'top_colour'), ('right', 'right_colour'),
4
    ('bottom', 'bottom_colour'), ('left', 'left_colour')
5
)
6
# 通过循环对四个方向的边框样式及颜色进行设定
7
for position, color in props:
8
    # 使用setattr内置函数动态给对象指定的属性赋值
9
    setattr(borders, position, xlwt.Borders.DASHED)
10
    setattr(borders, color, 5)
11
header_style.borders = borders

1
# 设置行高为40px
2
sheet.row(0).set_style(xlwt.easyxf(f'font:height {20 * 40}'))
3
titles = ('姓名', '语文', '数学', '英语')
4
for index, title in enumerate(titles):
5
    # 设置列宽为200px
6
    sheet.col(index).width = 20 * 200
7
    # 设置单元格的数据和样式
8
    sheet.write(0, index, title, header_style)

1
import xlrd
2
import xlwt
3
from xlutils.copy import copy
4

5
wb_for_read = xlrd.open_workbook('阿里巴巴2020年股票数据.xls')
6
sheet1 = wb_for_read.sheet_by_index(0)
7
nrows, ncols = sheet1.nrows, sheet1.ncols
8
wb_for_write = copy(wb_for_read)
9
sheet2 = wb_for_write.get_sheet(0)
10
sheet2.write(nrows, 4, xlwt.Formula(f'average(E2:E{nrows})'))
11
sheet2.write(nrows, 6, xlwt.Formula(f'sum(G2:G{nrows})'))
12
wb_for_write.save('阿里巴巴2020年股票数据汇总.xls')

1
import datetime
2

3
import openpyxl
4

5
# 加载一个工作簿 ---> Workbook
6
wb = openpyxl.load_workbook('阿里巴巴2020年股票数据.xlsx')
7
# 获取工作表的名字
8
print(wb.sheetnames)
9
# 获取工作表 ---> Worksheet
10
sheet = wb.worksheets[0]
11
# 获得单元格的范围
12
print(sheet.dimensions)
13
# 获得行数和列数
14
print(sheet.max_row, sheet.max_column)
15

16
# 获取指定单元格的值
17
print(sheet.cell(3, 3).value)
18
print(sheet['C3'].value)
19
print(sheet['G255'].value)
20

21
# 获取多个单元格（嵌套元组）
22
print(sheet['A2:C5'])
23

24
# 读取所有单元格的数据
25
for row_ch in range(2, sheet.max_row + 1):
26
    for col_ch in 'ABCDEFG':
27
        value = sheet[f'{col_ch}{row_ch}'].value
28
        if type(value) == datetime.datetime:
29
            print(value.strftime('%Y年%m月%d日'), end='\t')
30
        elif type(value) == int:
31
            print(f'{value:<10d}', end='\t')
32
        elif type(value) == float:
33
            print(f'{value:.4f}', end='\t')
34
        else:
35
            print(value, end='\t')
36
    print()

1
import random
2

3
import openpyxl
4

5
# 第一步：创建工作簿（Workbook）
6
wb = openpyxl.Workbook()
7

8
# 第二步：添加工作表（Worksheet）
9
sheet = wb.active
10
sheet.title = '期末成绩'
11

12
titles = ('姓名', '语文', '数学', '英语')
13
for col_index, title in enumerate(titles):
14
    sheet.cell(1, col_index + 1, title)
15

16
names = ('关羽', '张飞', '赵云', '马超', '黄忠')
17
for row_index, name in enumerate(names):
18
    sheet.cell(row_index + 2, 1, name)
19
    for col_index in range(2, 5):
20
        sheet.cell(row_index + 2, col_index, random.randrange(50, 101))
21

22
# 第四步：保存工作簿
23
wb.save('考试成绩表.xlsx')

1
import openpyxl
2
from openpyxl.styles import Font, Alignment, Border, Side
3

4
# 对齐方式
5
alignment = Alignment(horizontal='center', vertical='center')
6
# 边框线条
7
side = Side(color='ff7f50', style='mediumDashed')
8

9
wb = openpyxl.load_workbook('考试成绩表.xlsx')
10
sheet = wb.worksheets[0]
11

12
# 调整行高和列宽
13
sheet.row_dimensions[1].height = 30
14
sheet.column_dimensions['E'].width = 120
15

16
sheet['E1'] = '平均分'
17
# 设置字体
18
sheet.cell(1, 5).font = Font(size=18, bold=True, color='ff1493', name='华文楷体')
19
# 设置对齐方式
20
sheet.cell(1, 5).alignment = alignment
21
# 设置单元格边框
22
sheet.cell(1, 5).border = Border(left=side, top=side, right=side, bottom=side)
23
for i in range(2, 7):
24
    # 公式计算每个学生的平均分
25
    sheet[f'E{i}'] = f'=average(B{i}:D{i})'
26
    sheet.cell(i, 5).font = Font(size=12, color='4169e1', italic=True)
27
    sheet.cell(i, 5).alignment = alignment
28

29
wb.save('考试成绩表.xlsx')

1
from openpyxl import Workbook
2
from openpyxl.chart import BarChart, Reference
3

4
wb = Workbook(write_only=True)
5
sheet = wb.create_sheet()
6

7
rows = [
8
    ('类别', '销售A组', '销售B组'),
9
    ('手机', 40, 30),
10
    ('平板', 50, 60),
11
    ('笔记本', 80, 70),
12
    ('外围设备', 20, 10),
13
]
14

15
# 向表单中添加行
16
for row in rows:
17
    sheet.append(row)
18

19
# 创建图表对象
20
chart = BarChart()
21
chart.type = 'col'
22
chart.style = 10
23
# 设置图表的标题
24
chart.title = '销售统计图'
25
# 设置图表纵轴的标题
26
chart.y_axis.title = '销量'
27
# 设置图表横轴的标题
28
chart.x_axis.title = '商品类别'
29
# 设置数据的范围
30
data = Reference(sheet, min_col=2, min_row=1, max_row=5, max_col=3)
31
# 设置分类的范围
32
cats = Reference(sheet, min_col=1, min_row=2, max_row=5)
33
# 给图表添加数据
34
chart.add_data(data, titles_from_data=True)
35
# 给图表设置分类
36
chart.set_categories(cats)
37
chart.shape = 4
38
# 将图表添加到表单指定的单元格中
39
sheet.add_chart(chart, 'A10')
40

41
wb.save('demo.xlsx')

1
from docx import Document
2
from docx.shared import Cm, Pt
3

4
from docx.document import Document as Doc
5

6
# 创建代表Word文档的Doc对象
7
document = Document()  # type: Doc
8
# 添加大标题
9
document.add_heading('快快乐乐学Python', 0)
10
# 添加段落
11
p = document.add_paragraph('Python是一门非常流行的编程语言，它')
12
run = p.add_run('简单')
13
run.bold = True
14
run.font.size = Pt(18)
15
p.add_run('而且')
16
run = p.add_run('优雅')
17
run.font.size = Pt(18)
18
run.underline = True
19
p.add_run('。')
20

21
# 添加一级标题
22
document.add_heading('Heading, level 1', level=1)
23
# 添加带样式的段落
24
document.add_paragraph('Intense quote', style='Intense Quote')
25
# 添加无序列表
26
document.add_paragraph(
27
    'first item in unordered list', style='List Bullet'
28
)
29
document.add_paragraph(
30
    'second item in ordered list', style='List Bullet'
31
)
32
# 添加有序列表
33
document.add_paragraph(
34
    'first item in ordered list', style='List Number'
35
)
36
document.add_paragraph(
37
    'second item in ordered list', style='List Number'
38
)
39

40
# 添加图片（注意路径和图片必须要存在）
41
document.add_picture('resources/guido.jpg', width=Cm(5.2))
42

43
# 添加分节符
44
document.add_section()
45

46
records = (
47
    ('骆昊', '男', '1995-5-5'),
48
    ('孙美丽', '女', '1992-2-2')
49
)
50
# 添加表格
51
table = document.add_table(rows=1, cols=3)
52
table.style = 'Dark List'
53
hdr_cells = table.rows[0].cells
54
hdr_cells[0].text = '姓名'
55
hdr_cells[1].text = '性别'
56
hdr_cells[2].text = '出生日期'
57
# 为表格添加行
58
for name, sex, birthday in records:
59
    row_cells = table.add_row().cells
60
    row_cells[0].text = name
61
    row_cells[1].text = sex
62
    row_cells[2].text = birthday
63

64
# 添加分页符
65
document.add_page_break()
66

67
# 保存文档
68
document.save('demo.docx')

1
from docx import Document
2
from docx.document import Document as Doc
3

4
doc = Document('resources/离职证明.docx')  # type: Doc
5
for no, p in enumerate(doc.paragraphs):
6
    print(no, p.text)

1
0
2
1 离 职 证 明
3
2
4
3 兹证明 王大锤 ，身份证号码： 100200199512120001 ，于 2018 年 8 月 7 日至 2020 年 6 月 28 日在我单位  开发部 部门担任 Java开发工程师 职务，在职期间无不良表现。因 个人 原因，于 2020 年 6 月 28 日起终止解除劳动合同。现已结清财务相关费用，办理完解除劳动关系相关手续，双方不存在任何劳动争议。
5
4
6
5 特此证明！
7
6
8
7
9
8 公司名称（盖章）:成都风车车科技有限公司
10
9          2020 年 6 月 28 日

1
from docx import Document
2
from docx.document import Document as Doc
3

4
# 将真实信息用字典的方式保存在列表中
5
employees = [
6
    {
7
        'name': '骆昊',
8
        'id': '100200198011280001',
9
        'sdate': '2008年3月1日',
10
        'edate': '2012年2月29日',
11
        'department': '产品研发',
12
        'position': '架构师',
13
        'company': '成都华为技术有限公司'
14
    },
15
    {
16
        'name': '王大锤',
17
        'id': '510210199012125566',
18
        'sdate': '2019年1月1日',
19
        'edate': '2021年4月30日',
20
        'department': '产品研发',
21
        'position': 'Python开发工程师',
22
        'company': '成都谷道科技有限公司'
23
    },
24
    {
25
        'name': '李元芳',
26
        'id': '2102101995103221599',
27
        'sdate': '2020年5月10日',
28
        'edate': '2021年3月5日',
29
        'department': '产品研发',
30
        'position': 'Java开发工程师',
31
        'company': '同城企业管理集团有限公司'
32
    },
33
]
34
# 对列表进行循环遍历，批量生成Word文档
35
for emp_dict in employees:
36
    # 读取离职证明模板文件
37
    doc = Document('resources/离职证明模板.docx')  # type: Doc
38
    # 循环遍历所有段落寻找占位符
39
    for p in doc.paragraphs:
40
        if '{' not in p.text:
41
            continue
42
        # 不能直接修改段落内容，否则会丢失样式
43
        # 所以需要对段落中的元素进行遍历并进行查找替换
44
        for run in p.runs:
45
            if '{' not in run.text:
46
                continue
47
            # 将占位符换成实际内容
48
            start, end = run.text.find('{'), run.text.find('}')
49
            key, place_holder = run.text[start + 1:end], run.text[start:end + 1]
50
            run.text = run.text.replace(place_holder, emp_dict[key])
51
    # 每个人对应保存一个Word文档
52
    doc.save(f'{emp_dict["name"]}离职证明.docx')

1
from pptx import Presentation
2

3
# 创建幻灯片对象
4
pres = Presentation()
5

6
# 选择母版添加一页
7
title_slide_layout = pres.slide_layouts[0]
8
slide = pres.slides.add_slide(title_slide_layout)
9
# 获取标题栏和副标题栏
10
title = slide.shapes.title
11
subtitle = slide.placeholders[1]
12
# 编辑标题和副标题
13
title.text = "Welcome to Python"
14
subtitle.text = "Life is short, I use Python"
15

16
# 选择母版添加一页
17
bullet_slide_layout = pres.slide_layouts[1]
18
slide = pres.slides.add_slide(bullet_slide_layout)
19
# 获取页面上所有形状
20
shapes = slide.shapes
21
# 获取标题和主体
22
title_shape = shapes.title
23
body_shape = shapes.placeholders[1]
24
# 编辑标题
25
title_shape.text = 'Introduction'
26
# 编辑主体内容
27
tf = body_shape.text_frame
28
tf.text = 'History of Python'
29
# 添加一个一级段落
30
p = tf.add_paragraph()
31
p.text = 'X\'max 1989'
32
p.level = 1
33
# 添加一个二级段落
34
p = tf.add_paragraph()
35
p.text = 'Guido began to write interpreter for Python.'
36
p.level = 2
37

38
# 保存幻灯片
39
pres.save('test.pptx')

1
import PyPDF2
2

3
reader = PyPDF2.PdfReader('test.pdf')
4
for page in reader.pages:
5
    print(page.extract_text())

1
reader = PyPDF2.PdfReader('XGBoost.pdf')
2
writer = PyPDF2.PdfWriter()
3

4
for no, page in enumerate(reader.pages):
5
    if no % 2 == 0:
6
        new_page = page.rotate(-90)
7
    else:
8
        new_page = page.rotate(90)
9
    writer.add_page(new_page)
10

11
with open('temp.pdf', 'wb') as file_obj:
12
    writer.write(file_obj)

1
import PyPDF2
2

3
reader = PyPDF2.PdfReader('XGBoost.pdf')
4
writer = PyPDF2.PdfWriter()
5

6
for page in reader.pages:
7
    writer.add_page(page)
8

9
writer.encrypt('foobared')
10

11
with open('temp.pdf', 'wb') as file_obj:
12
    writer.write(file_obj)

1
reader1 = PyPDF2.PdfReader('XGBoost.pdf')
2
reader2 = PyPDF2.PdfReader('watermark.pdf')
3
writer = PyPDF2.PdfWriter()
4
watermark_page = reader2.pages[0]
5

6
for page in reader1.pages:
7
    page.merge_page(watermark_page)
8
    writer.add_page(page)
9

10
with open('temp.pdf', 'wb') as file_obj:
11
    writer.write(file_obj)

1
from reportlab.lib.pagesizes import A4
2
from reportlab.pdfbase import pdfmetrics
3
from reportlab.pdfbase.ttfonts import TTFont
4
from reportlab.pdfgen import canvas
5

6
pdf_canvas = canvas.Canvas('resources/demo.pdf', pagesize=A4)
7
width, height = A4
8

9
# 绘图
10
image = canvas.ImageReader('resources/guido.jpg')
11
pdf_canvas.drawImage(image, 20, height - 395, 250, 375)
12

13
# 显示当前页
14
pdf_canvas.showPage()
15

16
# 注册字体文件
17
pdfmetrics.registerFont(TTFont('Font1', 'resources/fonts/Vera.ttf'))
18
pdfmetrics.registerFont(TTFont('Font2', 'resources/fonts/青呱石头体.ttf'))
19

20
# 写字
21
pdf_canvas.setFont('Font2', 40)
22
pdf_canvas.setFillColorRGB(0.9, 0.5, 0.3, 1)
23
pdf_canvas.drawString(width // 2 - 120, height // 2, '你好，世界！')
24
pdf_canvas.setFont('Font1', 40)
25
pdf_canvas.setFillColorRGB(0, 1, 0, 0.5)
26
pdf_canvas.rotate(18)
27
pdf_canvas.drawString(250, 250, 'hello, world!')
28

29
# 保存
30
pdf_canvas.save()