Python基本類型的連接組合和互相轉(zhuǎn)換方式(13種)

更新時(shí)間：2019年12月16日 13:34:28 作者：Python探索牛

這篇文章主要介紹了Python中基本類型的連接組合和互相轉(zhuǎn)換13種方式,本文給大家介紹的非常詳細(xì)，具有一定的參考借鑒價(jià)值，需要的朋友可以參考下

本篇總結(jié)了一下字符串，列表，字典，元組的連接組合使用和類型的互相轉(zhuǎn)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(gè)字符串

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(zhuǎn)換為字符串

dict1 = {1: "a", 2: "b"} 
str1 = str(dict1) 
print(str1) # {1: 'a', 2: 'b'} 
print(type(str1)) # <class 'str'>

6.字典轉(zhuǎn)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(zhuǎn)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(zhuǎn)換為字符串

list1 = [1, 2, 3] 
str1 = str(list1) 
print(str1) # [1, 2, 3] 
print(type(str1)) # <class 'str'>

9.列表轉(zhuǎn)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(zhuǎn)換為元組

list1 = [1, 2, 3] 
tuple1 = tuple(list1) 
print(tuple1) # (1, 2, 3)

11.元組轉(zhuǎn)換為字符串

tuple1 = (1, 2, 3) 
str1 = tuple(tuple1) 
print(str1) # (1, 2, 3) 
print(type(str1)) # <class 'tuple'>

12.元組轉(zhuǎn)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(zhuǎn)換為列表

tuple1 = (1, 2) 
list1 = list(tuple1) 
print(list1) # [1, 2]

總結(jié)

以上所述是小編給大家介紹的Python基本類型的連接組合和互相轉(zhuǎn)換方式，希望對(duì)大家有所幫助，如果大家有任何疑問(wèn)請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持！
如果你覺(jué)得本文對(duì)你有幫助，歡迎轉(zhuǎn)載，煩請(qǐng)注明出處，謝謝！

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