python中 for i in range(10): for j in range(10): 要怎样才能输出只有当i和j相等时的i+j？ python中for _ in range(10)与for ...

python\u4e2d\u7684for i in range\u600e\u4e48\u7528

python for i in range\u662f\u7528\u6765for\u5faa\u73af\u904d\u5386\u7684\u3002python\u4e2drange \u662f\u4e2a\u51fd\u6570\uff0crange() \u51fd\u6570\u53ef\u521b\u5efa\u4e00\u4e2a\u6574\u6570\u5217\u8868,python\u4e2d\u7528\u6765\u5728for\u5faa\u73af\u4e2d\u904d\u5386\u3002
\u7528\u6cd5\u5982\uff1a for i in range \uff081\uff0c3\uff09\u3002\u8bed\u6cd5\u683c\u5f0f\uff1arange(start, stop[, step])\uff0c\u5206\u522b\u662f\u8d77\u59cb\u3001\u7ec8\u6b62\u548c\u6b65\u957f\u3002
range()\u51fd\u6570\u8fd4\u56de\u7684\u5bf9\u8c61\u7684\u884c\u4e3a\u90fd\u5f88\u50cf\u4e00\u4e2a\u5217\u8868\uff0c\u4f46\u662f\u5b83\u786e\u5b9e\u4e0d\u662f\u4e00\u4e2a\u5217\u8868\uff0c\u5b83\u53ea\u662f\u5728\u5faa\u73af\u8fed\u4ee3\u7684\u60c5\u51b5\u4e0b\u8fd4\u56de\u6307\u5b9a\u7d22\u5f15\u7684\u503c\uff0c\u4f46\u662f\u5b83\u5e76\u4e0d\u4f1a\u5728\u5185\u5b58\u4e2d\u771f\u6b63\u4ea7\u751f\u4e00\u4e2a\u5217\u8868\u5bf9\u8c61\uff0c\u8fd9\u6837\u4e5f\u662f\u4e3a\u4e86\u8282\u7ea6\u5185\u5b58\u7a7a\u95f4\u3002\u5b9e\u9645\u7528\u6cd5\u5206\u4ee5\u4e0b\u51e0\u79cd\u60c5\u51b5\uff1a
for in range\uff083\uff09\u5373\uff1a\u4ece0\u52303\uff0c\u4e0d\u5305\u542b3\uff0c\u53730,1,2\u3002

2.for in range(1,3) \u5373\uff1a\u4ece1\u52303\uff0c\u4e0d\u5305\u542b3\uff0c\u53731,2\u3002

3.for in range\uff081,3,2\uff09\u5373\uff1a\u4ece1\u52303\uff0c\u6bcf\u6b21\u589e\u52a02\uff0c\u56e0\u4e3a1+2=3\uff0c\u6240\u4ee5\u8f93\u51fa\u53ea\u67091\u7b2c\u4e09\u4e2a\u6570\u5b572\u662f\u4ee3\u8868\u6b65\u957f\u3002\u5982\u679c\u4e0d\u8bbe\u7f6e\uff0c\u5c31\u662f\u9ed8\u8ba4\u6b65\u957f\u4e3a1\u3002

\u8fd9\u4e24\u4e2a\u5176\u5b9e\u662f\u4e00\u6837\u7684\uff0c\u53ea\u662f\u53d8\u91cf\u540d\u5b57\u4e0d\u4e00\u6837\uff0c\u8981\u662f\u5230\u53d8\u91cf\u540d\u662f\u8981\u6c42\u7528\u5b57\u6bcd\u6216\u8005\u4e0b\u5212\u7ebf\u5f00\u5934\u7684\uff0c\u8fd9\u4e2a\u6b63\u597d\u53ea\u7528\u4e86\u4e00\u4e2a\u4e0b\u5212\u7ebf\u800c\u5df2\uff1b

那为什么要两个循环？一个循环就行了

for i in range(10):
for j in range(10):
if i == j:
print(i + j)

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