python学习,第二天札记
python学习,第二天笔记
#强制转换 #a = "1"; #b = "2"; #print a + b; #print int(a) + int(b); #12 #3 #首字母大写 #a = "please call me ck"; #b = "PLEASE CALL ME CK"; #print a.capitalize(); #print b.capitalize(); #Please call me ck #Please call me ck #大小写互换 #a = "My name is CK"; #print a.swapcase(); #mY NAME IS ck #截取字符串 #a = "call me ck"; #print a[0:6]; #call m #各种判断 #a = "Abcdef"; #print a.isalpha();#所有字符都是A-Z或a-z #print a.isalnum();#是否所有字符都是数字或者A-Z或者a-z #print a.isdigit();#是否所有字符都是数字 #print a.islower();#是否都是小写 #print a.isupper();#是否都是大写 #print a.istitle();#是否首字母为大写 #print a.isspace();#是否所有字符都是空白符\n,\t,\r,' ' #True #True #False #False #False #True #False #在字符串查找子串 #a = "my name is ck ck"; #print a.find("ck"); # #print a.find("my", 1);#从1开始查找字符串 #print a.rfind("ck");#反向查找字符串 #11 #-1 #14