Pytho基础(1)

导读:本篇文章讲解 Pytho基础(1),希望对大家有帮助,欢迎收藏,转发!站点地址:www.bmabk.com

Pytho基础(1)

占位符

%

text = "姓名:%s,年龄:%s。" %("json",29)
print(text)

>>> 姓名:json,年龄:29

f-string

name = "张三"
age = 21
res = f"姓名:{name},年龄:{age}。"
print(res)

>>> 姓名:张三,年龄:21

判断开头结尾

startswith

text = "Hello World"
print(text.startswith("He"))

>>> True

endswith

text = "Hello World"
print(text.endswith("ld"))

>>> True

替换

replace

text = "Hello World"
print(text.replace("or","ro"))

>>> Hello Wrold

大小写

upper

text = "Hello World"
print(text.upper())

>>> HELLO WORLD

lower

text = "Hello World"
print(text.lower())

>>>hello world

切割

split(从左到右)

text = "This is base Python."
print(text.split(" ", maxsplit=2))

>>> ['This', 'is', 'base Python.']

rsplit(从右到左)

text = "This is base Python."
print(text.rsplit(" ", maxsplit=2))

>>>['This is', 'base', 'Python.']

连接

join

t1 = ["This","is","base","Python."]
print(" - ".join(t1))

>>> This - is - base - Python.

去除空白

strip(只能去除两端的空白,中间的无法去除)

s1 = " world "
print(s1.strip())

>>>world

判断是否包含数字

isdecimal

n1 = "748392"
print(n1.isdecimal())
n2 = "634asjkqg"
print(n2.isdecimal())

>>>True
>>>False

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