海象运算符？一文详解python3.8到底更新了哪些新功能

>>> text = "早起学习"
>>> print(text)
False

>>> print(text := "早起学习")
早起学习

inputs = list()
current = input("请输入文字: ")
while current != "早起python":
    inputs.append(current)
    current = input("请输入文字: ")

inputs = list()
while True:
    current = input(请输入文字": ")
    if current == "早起python":
        break
    inputs.append(current)

inputs = list()
while (current := input("请输入文字: ")) != "早起python":
    inputs.append(current)

>>> style = "早起python"
>>> f"I love {style} "
'I love 早起python'

>>> f"i love {(text := '早起python')} "
'I love 早起python'

>>> python = 3.8
>>> f"{python=}"
'python=3.8'

>>> python = 3.7
>>> f"python={python}"
'python=3.7'

#查看pip相关信息>>> metadata.version("pip")'20.0.2'

>>> pip_metadata = metadata.metadata("pip")
>>> list(pip_metadata)
['Metadata-Version', 'Name', 'Version', 'Summary', 'Home-page', 'Author',
 'Author-email', 'License', 'Keywords', 'Platform', 'Classifier',
  'Classifier', 'Classifier', 'Classifier', 'Classifier', 'Classifier',
  'Classifier', 'Classifier', 'Classifier', 'Classifier', 'Classifier',
  'Classifier', 'Classifier', 'Requires-Python']

>>> pip_metadata["Home-page"]
'https://pip.pypa.io/'

>>> pip_metadata["Requires-Python"]
'>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*'

#python3.7>>> version = "3.7">>> version is "3.7"
False

# Python 3.8
>>> version = "3.8"
>>> version is "3.8"
<stdin>:1: SyntaxWarning: "is" with a literal. Did you mean "=="?
False

>>> version == "3.8"
True

yum -y install yum-utilsyum-builddep pythoncurl -O https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgztar xf Python-3.8.0.tgzcd Python-3.8.0./configuremakemake install