2021-2022学年高中信息技术浙教版（2019）必修1 数据与计算3.2.6 字符串 课件-（24张PPT）

(课件网) 3.2 Python程序设计 6、字符串 python >>>51=Welcome >>>52=Welcome >>>id(s1) 2077797526752 >>>id(S2) 2877797526752 s11 Welcome S2 >>>s=str( Welcome") >>>s Welcome >>>1en(s) >>>max( s >>>min(s >>> >>>s Welcome >>>s[e] >>>s[6] >>>s[16] raceback ( most recent call last): File ",line 1, in s[16] IndexError: string index out of range >>> >>>s=Welcome >>>s[-1] >>>s[-1+1en(s)] >>>s[-3] >>>s[-3+1en(s)] >>> >>>s「8 raceback ( most recent call last): File" " line 1, in s[0] W ypeError: str object does not support item assignment >>> >>>s=Welcome >>>s[1:4] elc >>>s=Welcome >>>s[:6] Welcom >>>s[e:6] Welcom >>>s[4:] ome >>>s[4:1en(s)] ome >>>s[::2] Wloe >>>s=Welcome >>>s[1:-1] e⊥com >>>s[1:-1+1en(s)] elcom >>>s=Welcome >>>s[3:3] >>>s[2:16] Icome >>>s[2:1en(s)] i1come' >>>s1=Welcome >>>s2=Python >>>s3=s1+"to"+s2 >>>s3 Welcome to Python >>>s4=3*s1 >>>s4 WelcomeWel comeWel come >>>s5=s1*3 >>>s5 WelcomeWel comeWelcome >>>s=Welcome >>>come In s True >>>come not in s False