Python学习笔记之列表和成员运算符及列表相关方法详解

lst_of_random_things = [1, 3.4, 'a string', True] # 这是一个包含 4 个不同类型元素的列表
print(lst_of_random_things[0]) # 1

print(lst_of_random_things[0]) # 1
print(lst_of_random_things[len(lst_of_random_things) - 1]) # True

print(lst_of_random_things[-1]) # True
print(lst_of_random_things[-2]) # a string

lst_of_random_things = [1, 3.4, 'a string', True]
print(lst_of_random_things[1:2]) # [3.4]

lst_of_random_things = [1, 3.4, 'a string', True]
print(lst_of_random_things[:2]) # [1, 3.4]

lst_of_random_things = [1, 3.4, 'a string', True]
print(lst_of_random_things[1:]) # [3.4, 'a string', True]

print('this' in 'this is a string') # True
print('in' in 'this is a string') # True
print('isa' in 'this is a string') # False
print(5 not in [1, 2, 3, 4, 6]) # True
print(5 in [1, 2, 3, 4, 6]) # False

my_lst = [1, 2, 3, 4, 5]
my_lst[0] = 'one'
print(my_lst) # ['one', 2, 3, 4, 5]

greeting = "Hello there"
greeting[0] = 'M'

greeting = "Hello there"
greeting = 'Hi there'
print(greeting) # Hi there

month = 8
days_in_month = [31,28,31,30,31,30,31,31,30,31,30,31]
# use list indexing to determine the number of days in month
num_days = days_in_month[month - 1]
print(num_days)

eclipse_dates = ['June 21, 2001', 'December 4, 2002', 'November 23, 2003',
        'March 29, 2006', 'August 1, 2008', 'July 22, 2009',
        'July 11, 2010', 'November 13, 2012', 'March 20, 2015',
        'March 9, 2016']
# TODO: Modify this line so it prints the last three elements of the list
print(eclipse_dates[-3:])

new_str = "\n".join(["fore", "aft", "starboard", "port"])
print(new_str)

fore
aft
starboard
port

name = "-".join(["García", "O'Kelly"])
print(name)

letters = ['a', 'b', 'c', 'd']
letters.append('z')
print(letters)

a = [1, 5, 8]
b = [2, 6, 9, 10]
c = [100, 200]
print(max([len(a), len(b), len(c)])) # 4
print(min([len(a), len(b), len(c)])) # 2

names = ["Carol", "Albert", "Ben", "Donna"]
print(" & ".join(sorted(names))) # Albert & Ben & Carol & Donna

names = ["Carol", "Albert", "Ben", "Donna"]
names.append("Eugenia")
print(sorted(names)) # ['Albert', 'Ben', 'Carol', 'Donna', 'Eugenia']