初识Python

1、列表的操作方法：

　　

cast = ["Cleese", 'Palin', 'Jones', "Idle"]
print(cast) # 打印整个列表
print(len(cast)) # 打印列表长度
print(cast[0]) # 打印列表首项

cast.append("Gillian") #在列表末尾增加一个数据项
cast.pop() # 删除列表末尾数据项
cast.extend(["Gilliam","Chapman"]) # 在列表末尾增加数据项的集合
cast.remove("Chapman") # 找到并删除一个特定的数据项
cast.insert(0, "Chapman") #在制定位置插入数据项

 

2、迭代数据的操作方法:

fav_movies = ["The Holy Grail", "The Life of Brain"]
for each_flick in fav_movies:
    print(each_flick)

count = 0
while count < len(movies):
    print(movies[count])
    count = count + 1

3、 Python 大小写敏感

4、BIF： isinstance() 某个特定的标识符是否包含某个特定类型的数据

for each_item in movies:
    if isinstance(each_item, list): # 某个特定字符串是否包含某个特定类型的数据
        for nested_item in each_item:
            print(nested_item)
    else:
        print(each_item)

5、函数和递归

movies = ["The Holy Grail", 1975, "Terry Jones & Terry Gillian", 91, ["Graham Champman", ["Michael Palin", "john Cleese", "Terry Gilliam", "Eric Idle", "Terry Jones"]]]
def print_lol(movie_list):
    for item in movie_list:
        if isinstance(item, list):
            print_lol(item)
        else:
            print(item)

print_lol(movies)