标签：ext windows style 标准 异常 this val ascii var
string中包含了处理文本的常量和模板
常量
print(string.whitespace) print(string.ascii_lowercase) print(string.ascii_uppercase) print(string.ascii_letters) print(string.digits) print(string.hexdigits) print(string.octdigits) print(string.punctuation) print(string.printable) """ abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789 0123456789abcdefABCDEF 01234567 !"#$%&‘()*+,-./:;<=>?@[\]^_`{|}~ 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&‘()*+,-./:;<=>?@[\]^_`{|}~ """ # 第一个是几个空行,Windows输出有点问题
函数
capwords():每个单词首字母大写,可自定义单词间分隔符
s = ‘This is a dog‘ print(s) print(string.capwords(s)) s2 = ‘This-is-a-dog‘ print(s2) print(string.capwords(s2, ‘-‘)) """ This is a dog This Is A Dog This-is-a-dog This-Is-A-Dog """
模板
substitute() 传入模板变量, 没有就报错
safe_substitute() 捕获异常,原样输出
values = {‘var‘: ‘boo‘}
t = string.Template("""
Variable ：$var
Excape : $$
Variable in text: ${var}iable
""")
print(t.substitute(values))
t2 = string.Template("$var is here but $missing is not provided")
try:
print(t2.substitute(values))
except KeyError as err:
print(‘ERROR:‘, str(err))
print(t2.safe_substitute(values))
"""
Variable ：boo
Excape : $
Variable in text: booiable
ERROR: ‘missing‘
boo is here but $missing is not provided
"""
$$ 输出 $
自定义模板类继承string中的模板类,可自定义变量定界符,和变量查找规则
class MyTemplate(string.Template): delimiter = ‘%‘ idpattern = ‘[a-z]+_[a-z]+‘
Formatter
标签：ext windows style 标准 异常 this val ascii var
原文地址：http://www.cnblogs.com/wj5633/p/6931028.html
