python data type --- string

Remove whitespace from strings, strip(), including spaces, tab keys, newlines

>>> name = "  Frank  "
>>> name.strip()
'Frank'

Split strings, split("separator"), group into a list

>>> name = "Apple, banbana, orice"
>>> name.split(",")
['Apple', ' banbana', ' orice']
>>>

Merge join("connection of strings symbol ")

>>> name = ['Frank', 'Marlon', 'Lee']
>>> "|".join(name)
'Frank|Marlon|Lee'

Judge whether a space is "in" in a substring

>>> name = "Frank Bain"
>>> '' in name
True
>>> "L" in name
False
>>>

Two string formatting and printing forms format

# 第一种表示方法
>>> msg = "Hello {name}, your age is {age}"
>>> msg.format(name="Frank", age=24)
'Hello Frank, your age is 24'
>>>

# 第二种表示方法 ，注意index 从0 开始
>>> msg = "Hello{0}, your age is {1}, sex is {2}"
>>> msg.format("Frank", 24, "man")
'HelloFrank, your age is 24, sex is man'
>>>

Judgment of string

>>> name = "Frank"
>>> name.upper()
'FRANK'
>>> name.lower()
'frank'
>>> name.startswith("F")
True
>>> name.endswith("k")
True
>>> name.endswith("a")
False