languages = ['Python', 'C', 'C++', 'R', 'Java']
languages.extend(["Ruby", "PHP"])
languages
['Python'...'C', 'Java']
languages.remove("C")
languages
['Python', 'R', 'C', 'Java']
languages = ['Python',...', 'C', 'R','Java']
languages_2 = languages
print(languages_2)
['Python', 'C', 'R', 'Java']
languages.pop...方法1:列表.copy()
languages = ['Python', 'C', 'R','Java']
languages_2 = languages.copy()
languages.pop()...languages = ['Python', 'C', 'R','Java']
languages_3 = languages[:]
languages.pop()
print(languages)