ascii_letters：'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'ascii_lowercase：'abcdefghijklmnopqrstuvwxyz'ascii_uppercase：'ABCDEFGHIJKLMNOPQRSTUVWXYZ'capwords：<function capwords at 0x000001CCBCA76160>digits：'0123456789'hexdigits：'0123456789abcdefABCDEF'octdigits：'01234567'printable：'0123456789abcdef...
We set the variableopen_sourceequal to the string"Sammy contributes to open source."and then we passed that variable to thelen()function withlen(open_source). We then passed the method into theprint()method so that we could generate the output on the screen from our program. Keep in mind...
In addition,Python’s strings support the sequence type methods described in the Sequence Types — str, unicode, list, tuple, buffer, xrange section. To output formatted strings use template strings or the % operator described in the String Formatting Operations section. Also, see the re module ...
Thestring.format()was introduced in Python 2.6 as an improvement on the%ssyntax. We use{}as placeholders in our string literal, then call theformat()method passing in expressions. Theformat()method returns a formatted version of the string substituting the placeholders with the values of its ar...
Python print(f"On the Moon, you would weigh about{round(100/6,1)}% of your weight on Earth.") Output:On the Moon, you would weigh about 16.7% of your weight on Earth. Using an expression doesn't require a function call. Any of the string methods are valid as well. For example,...
# Helper function for .sub() def convert(mo): # Check the most common path first. named = mo.group('named') or mo.group('braced') if named is not None: val = mapping[named] # We use this idiom instead of str() because the latter will ...
The two groups are the user string and the message. The.groups()method returns them as a tuple of strings. In thesanitize_message()function, you first use unpacking to assign the two strings to variables: Python defsanitize_message(match):user,message=match.groups()returnf"{censor_users(us...
Another useful built-in function for working with strings is str(). This function takes any object and returns a printable string version of that object. For example:Python Copy str(2) The output is:Output Copy '2' Here's one more example:Python Copy ...
key参数用的比较多,多用来使用的方式为key-function,来对list数据进行处理 对复杂对象进行比较: student = [('kel','C',30),('jun','A',25)] so = sorted(student,key=lambda x:x[2]) print so class Student(object): def __init__(self,name,score,age): ...
def functionName(arguments): suite 这里,argument是可选的;如果有多个参数,就必须使用逗号进行分隔。每个python函数有一个返回值,默认情况下为None,除非我们使用语法return value 来从函数返回,此时value是实际的返回值。返回值可以是一个值,也可以是一组值。如下: ...