Python容器类型的遍历汇总

Posted 2021-06-22 Python探索牛

遍历列表

l = ["a","b","1",2]
print(l)
for i in l:
	print(i)
	print(type(i))

结果

[\'a\', \'b\', \'1\', 2]
a
<class \'str\'>
b
<class \'str\'>
1
<class \'str\'>
2
<class \'int\'>

遍历字符串

s = "abcde"
print(s)
for si in s:
	print(si)
	print(type(si))

结果

abcde
a
<class \'str\'>
b
<class \'str\'>
c
<class \'str\'>
d
<class \'str\'>
e
<class \'str\'>

遍历字典

dic = {"name":"lsj","age":18}
print(dic,type(dic))
for d in dic:
	print(d,dic[d])
	print(type(d))

结果

{\'name\': \'lsj\', \'age\': 18} <class \'dict\'>
name lsj
<class \'str\'>
age 18
<class \'str\'>

遍历集合

\'\'\'
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se = {"a","1","ab",1,2,4}
print(set(se),type(se))
for se1 in se:
	print(se1)
	print(type(se1))

结果

{\'a\', \'ab\', 2, 1, 4, \'1\'} <class \'set\'>
a
<class \'str\'>
ab
<class \'str\'>
2
<class \'int\'>
1
<class \'int\'>
4
<class \'int\'>
1
<class \'str\'>

遍历元组

t = ("a","1","ab",1,2,4,)
print(t,type(t))
for t1 in t:
	print(t1)
	print(type(t1))

结果

(\'a\', \'1\', \'ab\', 1, 2, 4) <class \'tuple\'>
a
<class \'str\'>
1
<class \'str\'>
ab
<class \'str\'>
1
<class \'int\'>
2
<class \'int\'>
4
<class \'int\'>