![](\"http:\/\/zxpic.imtt.qq.com\/zxpic_imtt\/2018\/12\/17\/2020\/originalimage\/202751_3793458733_1_480_1965.jpg\")
<\/div>\n<\/div>\n\u5e9f\u8bdd\u5c11\u8bf4\uff0cHere we go\uff01<\/p>\n
\u5feb\u901f\u5f00\u59cb<\/p>\n
Python\u7684\u5b89\u88c5\u6211\u5c31\u4e0d\u7528\u4ecb\u7ecd\u4e86\uff0c\u5bf9\u5e94\u81ea\u5df1\u7535\u8111\u7684\u7c7b\u578b\u5230\u5b98\u7f51\u4e0b\u8f7d\u5b89\u88c5\u5c31\u597d\u4e86\uff0c\u975e\u5e38\u7b80\u5355\u3002\u5b89\u88c5\u597d\u4e86\u4e4b\u540e\u4f60\u53ef\u4ee5\u5728\u547d\u4ee4\u884c\u4e2d\u952e\u5165\u547d\u4ee4python\u8fdb\u5165\u4ea4\u4e92\u6a21\u5f0f\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4e00\u6b3e\u4f60\u559c\u6b22\u7684\u6587\u672c\u7f16\u8f91\u5668\u6765\u7f16\u5199python\u811a\u672c\uff0c\u7136\u540e\u5728\u547d\u4ee4\u884c\u4e2d\u6267\u884c\u3002\u51e0\u4e4e\u5bf9\u4e8e\u6240\u6709\u7684\u7f16\u7a0b\u8bed\u8a00\u6765\u8bf4\uff0c\u7b2c\u4e00\u4e2a\u7a0b\u5e8f\u90fd\u662f\u6253\u5370”hello, world!”\u3002\u8bd5\u7528\u4e00\u4e0b\u4ee3\u7801\u5c31\u53ef\u4ee5\u6253\u5370\u51fa\u201chello, world!\u201d\u3002<\/p>\n
greeting = input()#\u4ece\u952e\u76d8\u4e2d\u8f93\u5165\u201chello, world!\u201d\uff0c\u8bb0\u4f4finput()\u51fd\u6570\u8f93\u51fa\u7684\u90fd\u662f\u5b57\u7b26\u4e32<\/p>\n
print(greeting)<\/p>\n
\u8bb0\u4f4f\u5728python3\u4e2dprint\u540e\u9762\u4e00\u5b9a\u8981\u6253\u62ec\u53f7\u3002\u4f60\u4e5f\u53ef\u4ee5\u5c06\u4f60\u7684\u811a\u672c\u4fdd\u5b58\u4e3a\u201chello.py\u201d\uff0c\u7136\u540e\u5728\u547d\u4ee4\u884c\u4e2d\u6267\u884c<\/p>\n
python3 hello.py<\/p>\n
\u8fd9\u6837\u5c31\u53ef\u4ee5\u8f93\u51fa\uff1a<\/p>\n
hello, world!<\/p>\n
\u6570\u636e\u7c7b\u578b<\/p>\n
Python\u7684\u8bed\u6cd5\u76f8\u5bf9\u6bd4\u5176\u5b83\u7f16\u7a0b\u8bed\u8a00\u7b80\u5355\u7684\u5730\u65b9\u4e4b\u4e00\u5c31\u662f\u5b83\u4e0d\u7528\u7533\u660e\u53d8\u91cf\u7c7b\u578b\u3002\u76f4\u63a5\u7528\u201c=\u201d\u7ed9\u4e00\u4e2a\u53d8\u91cf\u8d4b\u503c\u540e\u8fd9\u4e2a\u53d8\u91cf\u5c31\u88ab\u521b\u5efa\u4e86\u3002Python\u4e2d\u5e38\u89c1\u7684\u6570\u636e\u7c7b\u578b\u6709\u4ee5\u4e0b\u51e0\u79cd:<\/p>\n
\u6570\u5b57 (Number)<\/p>\n
python\u53ef\u4ee5\u652f\u6301\u6574\u6570int(\u53ea\u6709\u957f\u6574\u578b), \u6d6e\u70b9\u578bfloat, \u5e03\u5c14\u578bbool\u4ee5\u53ca\u590d\u6570\u578bcomplex\u3002\u5185\u7f6e\u7684type()\u51fd\u6570\u53ef\u4ee5\u7528\u6765\u5224\u65ad\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u8bb0\u4f4ftype()\u51fd\u6570\u7684\u8fd4\u56de\u503c\u9700\u8981\u7528print()\u6253\u5370\u51fa\u6765\u3002<\/p>\n
(a, b, c, d) = (10, 5.5, False, 2+5j)<\/p>\n
print(type(a))<\/p>\n
\u5b57\u7b26\u4e32 (String)<\/p>\n
Python\u4e2d\u7684\u5b57\u7b26\u4e32\u8868\u793a\u7528\u5355\u5f15\u53f7’ ‘\u6216\u8005\u53cc\u5f15\u53f7” “\u62ec\u8d77\u6765\u7684\u4efb\u610f\u5b57\u7b26\uff0c\u6bd4\u5982\u2018hello\uff0c world\u2019\uff0c \u6216\u8005\u201chello, world\u201d\uff0c\u4f46\u5982\u679c\u5f15\u53f7\u91cc\u9762\u53c8\u6709\u5f15\u53f7\u7684\u8bdd\uff0c\u5c31\u9700\u8981\u7528\u53cd\u659c\u7ebf\u6765\u8f6c\u4e49\u3002<\/p>\n
str = “python”<\/p>\n
str.replace(‘p’, ‘P’)<\/p>\n
\u5207\u7247\uff1aPython\u4e2d\u5b57\u7b26\u4e32\u53ef\u4ee5\u5f88\u65b9\u4fbf\u7684\u622a\u53d6\u5176\u4e2d\u4e00\u90e8\u5206\uff0c\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u4e2a\u5b57\u7b26\u7d22\u5f15\u503c\u4e3a0\uff0c\u7b2c\u4e8c\u4e2a\u4e3a1\uff0c\u540e\u9762\u4e00\u6b21\u7d2f\u52a0\uff0c\u6700\u540e\u4e00\u4e2a\u5b57\u7b26\u4e32\u7d22\u5f15\u4e3a-1\u3002\u622a\u53d6\u7684\u8bed\u6cd5\u4e3a\uff1a\u53d8\u91cf[\u7b2c\u4e00\u4e2a\u7d22\u5f15\u503c\uff1a\u7b2c\u4e8c\u4e2a\u7d22\u5f15\u503c]<\/p>\n
str1 = str[0]<\/p>\n
str2 = str[2:4]<\/p>\n
2. \u8fde\u63a5\u548c\u590d\u5236\uff1a\u4e24\u4e2a\u5b57\u7b26\u4e32\u53ef\u4ee5\u7528(+)\u8fde\u63a5\u6210\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u7528\u661f\u53f7*\u53ef\u4ee5\u590d\u5236\u5b57\u7b26\u4e32<\/p>\n
str3 = str1 + str2<\/p>\n
str4 = str1 * 3<\/p>\n
3. \u591a\u884c\u8f93\u51fa\uff1a\u53ef\u4ee5\u7528”’…”’\u7684\u683c\u5f0f\u6765\u8f93\u51fa\u591a\u884c\u5b57\u7b26\u4e32<\/p>\n
print(”’line1<\/p>\n
line2<\/p>\n
line3”’)<\/p>\n
4. \u5224\u65ad\u662f\u5426\u5b58\u5728\uff1ain\u6216\u8005not in<\/p>\n
if “n” not in str:<\/p>\n
…<\/p>\n
5. \u683c\u5f0f\u5316\u8f93\u51fa\uff1a\u548cC\u8bed\u8a00\u4e2d\u7684printf\u7528\u6cd5\u76f8\u540c<\/p>\n
print(“My name is %s and I’m %d years old” % (“Mike”, 16))<\/p>\n
print(“Pi is %f” % (3.1415926)) # %f\u9ed8\u8ba4\u4fdd\u7559\u5c0f\u6570\u70b9\u540e6\u4f4d\u6709\u6548\u6570\u5b57<\/p>\n
print(“Pi is %.2f” % (3.1415926))<\/p>\n
\u6570\u636e\u7ed3\u6784<\/p>\n
\u5217\u8868 (List)<\/p>\n
\u5217\u8868\u5e94\u8be5\u53ef\u4ee5\u8bf4\u662fPython\u4e2d\u6700\u91cd\u8981\u6700\u5e38\u7528\u7684\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u4e86\uff0cpython\u4e2d\u7684\u5217\u8868\u5f88\u50cfPerl\u4e2d\u7684\u6570\u7ec4(array)\u7ed3\u6784\u3002\u5217\u8868\u7528\u65b9\u62ec\u53f7[]\u62ec\u8d77\u6765\uff0c\u7528\u9017\u53f7\u9694\u5f00\uff0c\u5217\u8868\u4e2d\u7684\u6bcf\u4e00\u4e2a\u5143\u7d20\u90fd\u4ece0\u5f00\u59cb\u7d22\u5f15\uff0c-1\u4e3a\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\uff0c\u540c\u6837\u4e5f\u53ef\u4ee5\u8fdb\u884c\u8fde\u63a5(+)\u548c\u590d\u5236(*)\u64cd\u4f5c\u3002<\/p>\n
list = [10, “python”, 8.2]<\/p>\n
list1 = list[0:2]<\/p>\n
list2 = list[1:]<\/p>\n
list3 = list*2<\/p>\n
“python” in list<\/p>\n
List\u7684\u5e38\u7528\u5185\u7f6e\u51fd\u6570\uff1a<\/p>\n
len()\uff1a\u83b7\u5f97list\u7684\u957f\u5ea6<\/p>\n
max()\u3001min()\uff1a\u5217\u8868\u5143\u7d20\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c(\u53ea\u652f\u6301\u76f8\u540c\u7c7b\u578b\u5143\u7d20\uff09<\/p>\n
append()\uff1a\u5f80list\u7684\u672b\u5c3e\u6dfb\u52a0\u5143\u7d20<\/p>\n
extend()\uff1a\u5f80\u5217\u8868\u672b\u5c3e\u6dfb\u52a0\u591a\u4e2a\u503c<\/p>\n
insert(i, NewItem)\uff1a\u63d2\u5165\u4efb\u610f\u5143\u7d20<\/p>\n
pop()\uff1a\u5220\u9664\u672b\u5c3e\u7684\u5143\u7d20<\/p>\n
pop(i)\uff1a\u5220\u9664\u7d22\u5f15\u662fi\u7684\u5143\u7d20<\/p>\n
count(obj)\uff1a\u7edf\u8ba1\u67d0\u4e2a\u5143\u7d20\u5728\u5217\u8868\u4e2d\u51fa\u73b0\u7684\u6b21\u6570<\/p>\n
reverse()\uff1a\u53cd\u5411\u5217\u8868<\/p>\n
sort()\uff1a\u5217\u8868\u6392\u5e8f<\/p>\n
clear()\uff1a\u6e05\u7a7a\u5217\u8868<\/p>\n
list(tuple)\uff1a\u5c06\u5143\u7ec4\u8f6c\u5316\u4e3a\u5217\u8868<\/p>\n
\u5143\u7ec4(Tuple)<\/p>\n
\u5143\u7ec4\u548c\u5217\u8868\u975e\u5e38\u50cf\uff0c\u552f\u4e00\u4e0d\u540c\u7684\u662f\u5143\u7ec4\u4e2d\u7684\u5143\u7d20\u4e0d\u80fd\u4fee\u6539\uff0c\u7528\u5c0f\u62ec\u53f7()\u62ec\u8d77\u6765\uff0c\u7528\u9017\u53f7\u5206\u5f00\uff0c\u5f53\u5143\u7ec4\u4e2d\u53ea\u6709\u4e00\u4e2a\u5143\u7d20\u65f6\uff0c\u4e5f\u8981\u52a0\u4e0a\u9017\u53f7\u3002<\/p>\n
tuple1 = (8, “tuple”, 6.6″)<\/p>\n
tuple2 = (“hello”,)<\/p>\n
tuple3 = tuple1[2]<\/p>\n
tuple4 = (8, “tuple”,[3, 10], 6.6″)<\/p>\n
tuple4[2][1] = 6 #tuple4\u4e2d\u7684\u4e00\u4e2a\u5217\u8868\u4e2d\u7684\u5143\u7d20\u662f\u53ef\u4ee5\u66f4\u6539\u7684<\/p>\n
\u5b57\u5178(Dictionary)<\/p>\n
Python\u4e2d\u7684\u5b57\u5178\u5c31\u662fPerl\u4e2d\u7684\u54c8\u5e0c(Hash)\uff0c\u6216\u8005\u5f88\u591a\u5176\u5b83\u8bed\u8a00\u4e2d\u7684\u6620\u5c04Map\uff0c\u5b57\u5178\u548c\u5217\u8868\u7684\u533a\u522b\u662f\u5b57\u5178\u4e2d\u7684\u5143\u7d20\u662f\u65e0\u5e8f\u7684\uff0c\u7528\u5927\u62ec\u53f7{}\u6765\u6807\u8bc6\uff0c\u5e76\u4e14\u662f\u901a\u8fc7\u5065(key)\u548c\u503c(Vavule)\u6765\u5b58\u50a8\u7684\uff0c\u5065\u5fc5\u987b\u662f\u552f\u4e00\u7684\u3002<\/p>\n
\u5b57\u5178\u7684\u5e38\u7528\u5185\u7f6e\u51fd\u6570\uff1a<\/p>\n
dic.keys()<\/p>\n
dic.values()<\/p>\n
dic.pop(“site”) #\u5220\u9664\u4e00\u4e2akey<\/p>\n
del dic[“site”] #\u5220\u9664\u4e00\u4e2akey<\/p>\n
dic.clear()<\/p>\n
key in dic<\/p>\n
dic.items()<\/p>\n
\u96c6\u5408(Set)<\/p>\n
\u96c6\u5408\u7528\u6765\u5b58\u653e\u4e00\u7ec4\u65e0\u5e8f\u4e14\u4e0d\u53ef\u91cd\u590d\u7684\u5143\u7d20\uff0c\u7528\u5927\u62ec\u53f7{}\u6216\u8005set()\u51fd\u6570\u521b\u5efa\uff0c\u5982\u679c\u8981\u521b\u5efa\u4e00\u4e2a\u7a7a\u96c6\u5408\u5c31\u9700\u8981\u7528set()\uff0c\u800c\u4e0d\u662f{}\uff0c\u56e0\u4e3a{}\u662f\u7528\u6765\u521b\u5efa\u7a7a\u5b57\u5178\u7684\u3002set()\u51fd\u6570\u53ea\u80fd\u63a5\u7eb3\u4e00\u4e2alist\u4f5c\u4e3a\u53c2\u6570<\/p>\n
num1 =<\/p>\n
5 in num#\u5224\u65ad5\u662f\u5426\u5728\u96c6\u5408\u4e2d<\/p>\n
num2 = set([10, 8, 5, 8])#num2\u4e2d\u53ea\u670910\u30018\u30015\u4e09\u4e2a\u5143\u7d20<\/p>\n
num2.add(9) #\u6dfb\u52a0\u5143\u7d20<\/p>\n
num2.remove(8)#\u5220\u9664\u5143\u7d20<\/p>\n
num1 & num2#\u5e76\u96c6\u8fd0\u7b97<\/p>\n
num1 | num2#\u4ea4\u96c6\u8fd0\u7b97<\/p>\n
\u6761\u4ef6\u5224\u65ad<\/p>\n
\u6761\u4ef6\u5224\u65ad\u5f88\u7b80\u7b54\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8d58\u8ff0\u4e86<\/p>\n
num = 10<\/p>\n
if num > 0:<\/p>\n
print “positive number!”<\/p>\n
elif num<\/p>\n
print “negative number!”<\/p>\n
else:<\/p>\n
print “0!”<\/p>\n
\u5faa\u73af\u63a7\u5236<\/p>\n
Python\u4e3b\u8981\u6709\u4e24\u79cd\u5faa\u73af\uff0cfor…in\u5faa\u73af\u548cwhile\u5faa\u73af\u3002for…in\u5faa\u73af\u53ef\u4ee5\u904d\u5386\u4e00\u4e2a\u5217\u8868\u3001\u5143\u7ec4\u6216\u8005\u5b57\u7b26\u4e32\u7b49\u7b49<\/p>\n
range()\u51fd\u6570<\/p>\n
range(n)\u8f93\u51fa0\u5230n-1\u7684\u6574\u6570\u5217\u8868<\/p>\n
range(m,n)\u8f93\u51fam\u5230n-1\u7684\u6574\u6570\u5217\u8868<\/p>\n
range(m,n,i)\u751f\u6210\u4ecem\u5f00\u59cb\u5230n-1\u4ee5i\u4e3a\u589e\u91cf\u7684\u7b49\u5dee\u6570\u5217<\/p>\n
range(len())\u7ed3\u5408\u53ef\u4ee5\u904d\u5386\u4e00\u4e2a\u5927\u5c0f\u672a\u77e5\u7684\u5217\u8868<\/p>\n
for…in\u5faa\u73af<\/p>\n
names = [“John”, “Mike”, “Bob”]<\/p>\n
for name in names:<\/p>\n
print(name)<\/p>\n
sum = 0<\/p>\n
for i in range(101):<\/p>\n
sum = sum + i<\/p>\n
while\u5faa\u73af<\/p>\n
n = 10<\/p>\n
sum = 0<\/p>\n
while n > 0:<\/p>\n
n = n-1<\/p>\n
sum = sum + n<\/p>\n
break\u548ccontinue<\/p>\n
break\u53ef\u4ee5\u8df3\u51fa\u6574\u4e2a\u5faa\u73af\u4f53\uff0c\u800ccontinue\u53ea\u662f\u8df3\u51fa\u5f53\u524d\u5faa\u73af\uff0c\u8fdb\u5165\u4e0b\u4e00\u4e2a\u5faa\u73af<\/p>\n
\u8fed\u4ee3\u5668\u548c\u751f\u6210\u5668<\/p>\n
\u5217\u8868\u751f\u6210\u5f0f<\/p>\n
\u5217\u8868\u751f\u6210\u5f0f\u5c31\u662f\u751f\u6210\u4e00\u4e2a\u7279\u5b9a\u5217\u8868\u7684\u8868\u8fbe\u5f0f\uff0c\u57fa\u672c\u8bed\u6cd5\uff1a[exp for iter_var in iterable]\uff0c\u4f8b\u5982\uff1a<\/p>\n
list1 = [2*a for a in range(10)]<\/p>\n
\u8fd8\u53ef\u4ee5\u52a0\u5165\u4e00\u5c42\u5faa\u73af\uff1a<\/p>\n
list2 = [a*b for a in range(3) for b in range(4)]<\/p>\n
\u8fd8\u53ef\u4ee5\u52a0\u5165\u5224\u65ad\u8bed\u53e5\uff1a<\/p>\n
list3 = [2*a for a in range(10) if a%2 == 1]<\/p>\n
\u8fd9\u6837\u5199\u6bd4\u7528\u5faa\u73af\u8bed\u53e5\u6765\u5199\u8981\u7b80\u5355\u5f88\u591a\u3002\u6ce8\u610f\u4e0d\u8981\u5fd8\u8bb0\u628a\u5f0f\u5b50\u7528\u4e2d\u62ec\u53f7\u62ec\u8d77\u6765\uff0c\u56e0\u4e3a\u4f60\u8981\u751f\u6210\u7684\u662f\u5217\u8868\u3002<\/p>\n
\u751f\u6210\u5668<\/p>\n
\u7528\u5217\u8868\u751f\u6210\u5f0f\u751f\u6210\u7684\u5217\u8868\u4f1a\u628a\u5217\u8868\u4e2d\u6240\u6709\u7684\u6570\u636e\u5168\u90e8\u653e\u5165\u5185\u5b58\u4e2d\uff0c\u5f53\u5217\u8868\u975e\u5e38\u5927\u65f6\uff0c\u4f1a\u6d88\u8017\u5f88\u591a\u7684\u5185\u5b58\uff0c\u5e76\u4e14\u5217\u8868\u7684\u5927\u5c0f\u662f\u6709\u9650\u7684\uff0c\u56e0\u6b64\u6709\u4e9b\u65f6\u5019\u6211\u4eec\u4e0d\u5fc5\u628a\u4e00\u4e2a\u5b8c\u6574\u7684\u5217\u8868\u4e00\u4e0b\u5b50\u751f\u6210\u653e\u5728\u5185\u5b58\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u53ea\u4fdd\u5b58\u4e00\u4e2a\u7b97\u6cd5\uff0c\u5f53\u9700\u8981\u7684\u65f6\u5019\u53ef\u4ee5\u4e00\u4e2a\u4e00\u4e2a\u7684\u63a8\u51fa\u540e\u7eed\u7684\u5143\u7d20\uff0c\u8fd9\u79cd\u65b9\u6cd5\u5c31\u53eb\u505a\u751f\u6210\u5668(generator)\uff0c\u6784\u9020\u751f\u6210\u5668\u4e3b\u8981\u6709\u4e24\u79cd\u65b9\u5f0f:<\/p>\n
\u50cf\u5217\u8868\u751f\u6210\u5f0f\u4e00\u6837\uff0c\u53ea\u8981\u4e2d\u62ec\u53f7[]\u6539\u4e3a\u5c0f\u62ec\u53f7():<\/p>\n
generator1 = (2*a for a in range(10))<\/p>\n
2. \u5f53\u7a0b\u5e8f\u6bd4\u8f83\u590d\u6742\u96be\u4ee5\u7528\u5217\u8868\u751f\u6210\u5f0f\u7684\u65b9\u5f0f\u4ea7\u751f\u751f\u6210\u5668\u65f6\uff0c\u4f7f\u7528yield\u51fd\u6570\uff1a<\/p>\n
def cube(num1, num2):<\/p>\n
for i in range(num1, num2):<\/p>\n
yield i^3<\/p>\n
\u5f53\u51fd\u6570\u770b\u5230yield\u5173\u952e\u5b57\u65f6\uff0c\u8fd9\u4e2a\u51fd\u6570\u5c31\u4e0d\u518d\u662f\u4e00\u4e2a\u666e\u901a\u51fd\u6570\u4e86\uff0c\u800c\u6210\u4e86\u4e00\u4e2a\u751f\u6210\u5668generator\uff0c\u6bcf\u4e00\u6b21\u8c03\u7528next()\u51fd\u6570\u65f6\u5c31\u6267\u884c\u4e00\u6b21\uff0c\u9047\u5230yield\u5c31\u8fd4\u56de\u4e0d\u518d\u7ee7\u7eed\u6267\u884c\uff0c\u7a0b\u5e8f\u4f1a\u8bb0\u4f4f\u5f53\u524d\u7684\u4f4d\u7f6e\uff0c\u76f4\u5230\u4e0b\u4e00\u6b21\u7ee7\u7eed\u8c03\u7528next()\u518d\u6267\u884c\u4e0b\u4e00\u6b21\uff0c\u4e00\u76f4\u5230\u4e0d\u80fd\u518d\u8fd4\u56de\u503c\u4e86\u5c31\u62a5\u51faStopIteration\u9519\u8bef\u3002<\/p>\n
\u9664\u4e86\u53ef\u4ee5\u7528next()\u51fd\u6570\u8c03\u7528\u751f\u6210\u5668\u4e2d\u7684\u5143\u7d20\uff0c\u66f4\u666e\u904d\u7684\u7528\u6cd5\u662f\u7528for\u5faa\u73af\u6765\u904d\u5386\u751f\u6210\u5668\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n
g = cube(3, 8)<\/p>\n
for n in g:<\/p>\n
print(n)<\/p>\n
\u8fed\u4ee3\u5668<\/p>\n
\u6211\u4eec\u73b0\u5728\u5df2\u7ecf\u77e5\u9053\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u7528for\u5faa\u73af\u8fed\u4ee3\u7684\u5bf9\u8c61\u5305\u62ec\uff1a<\/p>\n
string, list, tuple, dictionary, set<\/p>\n
\u751f\u6210\u5668generator<\/p>\n
Python\u4e2d\u53ef\u4ee5\u7528for\u5faa\u73af\u8fed\u4ee3\u7684\u5bf9\u8c61\u7edf\u79f0\u4e3a”**\u53ef\u8fed\u4ee3\u5bf9\u8c61Iterable**”\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528isinstance()\u51fd\u6570\u6765\u5224\u65ad\u5bf9\u8c61\u7684\u7c7b\u578b\uff1a<\/p>\n
from collections import Iterable<\/p>\n
print(isinstance(g, Iterable))<\/p>\n
\u4e0e\u4e4b\u76f8\u5e94\u7684\uff0cPython\u4e2d\u5b9a\u4e49\u53ef\u4ee5next()\u51fd\u6570\u8c03\u7528\uff0c\u5e76\u4e0d\u65ad\u8fd4\u56de\u4e0b\u4e00\u4e2a\u503c\u7684\u5bf9\u8c61\u79f0\u4e4b\u4e3a**\u8fed\u4ee3\u5668Iterator**\uff0c\u6211\u4eec\u77e5\u9053generator\u65e2\u53ef\u4ee5\u88ab\u4f7f\u7528for\u5faa\u73af\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528next()\u51fd\u6570\uff0c\u6240\u4ee5generator\u65e2\u662fIterable\u4e5f\u662fIterator\u3002\u4f46\u662fstring, list, tuple, dictionary, set\u7b49\u7b49\u4e0d\u80fd\u4f7f\u7528next()\u51fd\u6570\uff0c\u56e0\u6b64\u53ea\u662fIterable\uff0c\u4f46\u662f\u53ef\u4ee5\u4f7f\u7528iter()\u51fd\u6570\u5c06Iterable\u53d8\u6210Iterator\u3002<\/p>\n
isinstance([], Iterable)<\/p>\n
isinstance(iter([]), Iterable)<\/p>\n
\u4ee5\u4e0a\u5dee\u4e0d\u591a\u5c31\u662fPython3\u6700\u6838\u5fc3\u6700\u57fa\u672c\u7684\u8bed\u6cd5\u4e86\uff0c\u540e\u9762\u6211\u4f1a\u63a5\u7740\u66f4\u65b0Python\u9ad8\u7ea7\u4e00\u70b9\u7684\u77e5\u8bc6\uff0c\u51fd\u6570\u4e0e\u6a21\u5757\uff0c\u795d\u5927\u5bb6\u5b66\u4e60\u6109\u5feb\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
Python\u662f\u4e00\u4e2a\u975e\u5e38\u4f18\u96c5\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u8bed\u6cd5\u975e\u5e38\u7684\u7b80\u5355\uff0c\u5f88\u591a\u65f6\u5019\u8bfb\u4e00\u4e9bPython\u4ee3\u7801\u5c31\u50cf\u8bfb\u82f1\u8bed\u4e00\u6837\uff0c\u5f88\u9002\u5408\u4f5c\u4e3a… \u9605\u8bfb\u66f4\u591a »Python\u6700\u6709\u6548\u7684\u5165\u95e8\u65b9\u6cd5<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/62"}],"collection":[{"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=62"}],"version-history":[{"count":1,"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/62\/revisions"}],"predecessor-version":[{"id":63,"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/62\/revisions\/63"}],"wp:attachment":[{"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=62"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=62"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hufe.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=62"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}