Python的文本常量与字符串模板之string库

import string

s = "When he shewed the riches of his glorious kingdom and the honour of his excellent majesty many days, even an hundred and fourscore days"
print("原始字符串")
print(s)
result = string.capwords(s)
print("首字母大写字符串")
print(result)

import string

values = {
    "name": "liyuanjing",
    "age": "13",
}

s = """My name is : $name
    I am $age years old
"""

template_str = string.Template(s)
print(template_str.substitute(values))

import string

values = {
    "name": "liyuanjing",
    "age": "13",
}

s = """My name is : $name
    I am $age years old
    $work
"""

template_str = string.Template(s)
print(template_str.safe_substitute(values))

import string

class MyTemplate(string.Template):
    delimiter = '@'
    idpattern = '[a-z]+_[0-9]+'

values = {
    "name_1": "liyuanjing",
    "age_1": "13",
}

s = """My name is : @name_1
    I am @age_1 years old
    @work_1
"""

template_str = MyTemplate(s)
print(template_str.safe_substitute(values))

print("My name is {}".format("liyuanjing"))#大括号匹配，按顺序依次填充
print("My {1} is {0}".format("liyuanjing","name"))#数字匹配，按位置依次填充
print("My {name} is {tom}".format(tom="liyuanjing",name="name"))#关键字匹配，按关键字填充

print('{} and {}'.format('tom', 'Jerry'))
print('{:10s}'.format('*'))  # 默认左对齐
print('{:>10s}'.format('*'))  # 右对齐
print('{:^10s}'.format('*'))  # 中间对齐
print('{:<10s}'.format('*'))  # 左对齐
print('{} is {:.2f}'.format(3.411592653, 3.1415926))#取2位小数
values = {
    "name_1": "liyuanjing",
    "age_1": "13",
}

s = """My name is : {name_1}
    I am {age_1} years old
"""

print(s.format(**values))

print('{:b}'.format(8))#:b转换为二进制
print('{:c}'.format(200))#:c转换Unicode字符串
print('{:d}'.format(111))#:d转换十进制
print('{:o}'.format(8))#:o转换八进制
print('{:x}'.format(32))#:x转换十六进制
print('{:e}'.format(32))#:e转换幂符号
print('{:%}'.format(0.32))#:%转换百分值
print('{:n}'.format(32000000000))#:n就是数值
print('{:g}'.format(32000000000))#:n也是数值，不过特别大时转换为幂科学计数