字符串
python 里面的字符串是一个实例,字符串是只读的,不可以修改。
字符串下标
#coding:utf-8
s1 = "abcdef"
print(s1[0])
print(s1[3])
"""
注释,字符串最后一个字符 这里是f
"""
print('字符串的最后一个是:')
print(s1[-1])
"""
这一句执行会出错,因为字符串不可以修改
"""
s1[0] = '1'
执行结果
jeapedudeAir-3:docs jeapedu$ python ../examples/string.py
a
d
字符串的最后一个是:
f
Traceback (most recent call last):
File "../examples/string.py", line 19, in <module>
s1[0] = '1'
TypeError: 'str' object does not support item assignment