本篇總結了一下字元串,列表,字典,元組的連接組合使用和類型的互相轉換小例子,尤其列表中的extend()方法和字典中的 update方法非常的常用。 1.連接兩個字元串 2.字典的連接 3.列表的連接 4.元組的連接 5.字典轉換為字元串 PS:遇到問題沒人解答?需要Python學習資料?可以加點擊 ...
本篇總結了一下字元串,列表,字典,元組的連接組合使用和類型的互相轉換小例子,尤其列表中的extend()方法和字典中的
update方法非常的常用。
1.連接兩個字元串
a = "hello "
b = "world"
a += b
print(a) # hello world
2.字典的連接
dict1 = {1: "a", 2: "b"}
dict2 = {3: "c", 4: "d"}
dict1.update(dict2)
print(dict1) # {1: 'a', 2: 'b', 3: 'c', 4: 'd'}
3.列表的連接
list1 = [1, 2, 3]
list2 = [4, 5, 6]
list1.extend(list2) # [1, 2, 3, 4, 5, 6]
print(list1)
4.元組的連接
tuple1 = (1, 2)
tuple2 = (3, 4)
tuple1 += tuple2
print(tuple1) # (1, 2, 3, 4)
5.字典轉換為字元串
dict1 = {1: "a", 2: "b"}
str1 = str(dict1)
print(str1) # {1: 'a', 2: 'b'}
print(type(str1)) # <class 'str'>
PS:遇到問題沒人解答?需要Python學習資料?可以加點擊下方鏈接自行獲取
note.youdao.com/noteshare?id=2dce86d0c2588ae7c0a88bee34324d76
6.字典轉換為列表
dict1 = {1: "a", 2: "b"}
list1 = list(dict1.keys())
list2 = list(dict1.values())
list3 = list(dict1)
print(list1) # [1, 2]
print(list2) # ['a', 'b']
print(list3) # [1,2]
7.字典轉換為元組
dict1 = {1: "a", 2: "b"}
tuple1 = tuple(dict1.keys())
tuple2 = tuple(dict1.values())
tuple3 = tuple(dict1)
print(tuple1) # (1, 2)
print(tuple2) # ('a', 'b')
print(tuple3) # (1, 2)
8.列表轉換為字元串
list1 = [1, 2, 3]
str1 = str(list1)
print(str1) # [1, 2, 3]
print(type(str1)) # <class 'str'>
9.列表轉換為字典
# 1.
list1 = [1, 2, 3]
list2 = ["a", "b", "c"]
dict1 = dict(zip(list1, list2))
print(dict1) # {1: 'a', 2: 'b', 3: 'c'}
# 2.
dict1 = {}
for i in list1:
dict1[i] = list2[list1.index(i)]
print(dict1) # {1: 'a', 2: 'b', 3: 'c'}
# 3.
list1 = [[1, 'a'], [2, 'b'], [3, 'c']]
dict1 = dict(list1)
print(dict1) # {1: 'a', 2: 'b', 3: 'c'}
10.列表轉換為元組
list1 = [1, 2, 3]
tuple1 = tuple(list1)
print(tuple1) # (1, 2, 3)
11.元組轉換為字元串
tuple1 = (1, 2, 3)
str1 = tuple(tuple1)
print(str1) # (1, 2, 3)
print(type(str1)) # <class 'tuple'>
12.元組轉換為字典
# 1.
tuple1 = (1, 2, 3)
tuple2 = (4, 5, 6)
dict1 = dict(zip(tuple1, tuple2))
print(dict1) # {1: 4, 2: 5, 3: 6}
# 2
dict1 = {}
for i in tuple1:
dict1[i] = tuple2[tuple1.index(i)]
print(dict1) # {1: 4, 2: 5, 3: 6}
# 3
tuple1 = (1, 2)
tuple2 = (4, 5)
tuple3 = (tuple1, tuple2)
dict1 = dict(tuple3)
print(dict1) # {1: 2, 4: 5}
13.元組轉換為列表
tuple1 = (1, 2)
list1 = list(tuple1)
print(list1) # [1, 2]