python学习-10 运算符1
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python学习-10 运算符1
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1.加+,減-,乘*,除/
例如:
a = 1 b = 2 c = a + b print(c)運算結(jié)果:
3Process finished with exit code 0 a = 1 b = 2 c = a - b print(c)運算結(jié)果:
-1Process finished with exit code 0 a = 1 b = 2 c = a * b print(c)運算結(jié)果:
2Process finished with exit code 0 a = 1 b = 2 c = a / b print(c)運算結(jié)果:
0.5Process finished with exit code 02.特殊的 冪 **, 取余%,//取商
例如:
a = 1 b = 2 c = a ** b print(c)運算結(jié)果:
1Process finished with exit code 0 a = 9 b = 2 c = a % b print(c)運算結(jié)果:
1Process finished with exit code 0 a = 9 b = 2 c = a // b print(c)運算結(jié)果:
4Process finished with exit code 03.in 和 not in 表示判斷
判斷某個東西是否在**里
例如:
in??
name = 'abd' #'abd' 字符串 ; 'a' 字符 if 'a' in name: # 如果a在name里print('ok') else:print('error')運行結(jié)果:
okProcess finished with exit code 0ps:
子字符串:
name = 'abd' #'abd' 字符串 ; 'a' 字符 #'bd' 子字符串或者叫子序列 if 'ad' in name: # 如果a在name里print('ok') else:print('error')運行結(jié)果:
errorProcess finished with exit code 0not in:
name = 'abd' if 'a' not in name:print('ok') else:print('error')運行結(jié)果:
errorProcess finished with exit code 0?
轉(zhuǎn)載于:https://www.cnblogs.com/liujinjing521/p/11020423.html
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