{"id":12277,"date":"2023-12-27T17:42:53","date_gmt":"2023-12-27T17:42:53","guid":{"rendered":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/?p=12277"},"modified":"2023-12-28T18:04:44","modified_gmt":"2023-12-28T18:04:44","slug":"%e6%95%b0%e5%80%a4%e3%81%ae%e3%82%aa%e3%83%bc%e3%83%80%e3%83%bc%e3%81%ae%e5%8f%96%e5%be%97%ef%bc%88%ef%bc%89","status":"publish","type":"post","link":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/?p=12277","title":{"rendered":"\u6570\u5024\u306e\u30aa\u30fc\u30c0\u30fc\u306e\u53d6\u5f97\uff08order of magnitude\uff09"},"content":{"rendered":"

Pyhton \u3067\u3001\u6570\u5024\u306e\u30aa\u30fc\u30c0\u30fc\u3092\u53d6\u5f97\u3059\u308b\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u3002\u4f8b\u3048\u3070\u3001\u6570\u5024\u304c 123 \u306a\u3089\u30012 \u3092\u5f97\u307e\u3059\u3002\u3042\u307e\u308a\u81ea\u4fe1\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n

%reset -f\r\n\r\nimport sys\r\n#from sympy import *\r\nimport sympy\r\n\r\ndef getOrderOfMagnitude(tmpStr):\r\n    \r\n    orderOfMagnitude = None\r\n    sign = None\r\n\r\n    #typeArray = ["<class 'sympy.core.numbers.Integer'>", "<class 'sympy.core.numbers.Float'>", "<class 'sympy.core.numbers.Zero'>", "<class 'sympy.core.numbers.One'>"]\r\n    typeArray = ["<class 'sympy.core.numbers.Integer'>", "<class 'sympy.core.numbers.Float'>", "<class 'sympy.core.numbers.Zero'>", "<class 'sympy.core.numbers.One'>", "<class 'sympy.core.numbers.NegativeOne'>"]\r\n\r\n    \r\n    try:\r\n        expr = sympy.sympify(tmpStr, evaluate=True)\r\n    except Exception as ex:\r\n        expr = ex\r\n        \r\n    print('expr : ', expr)\r\n\r\n    exprClass = str(type(expr))\r\n\r\n    if exprClass == "<class 'sympy.core.sympify.SympifyError'>":    \r\n        return sign, orderOfMagnitude, "is not numerical value or expression."\r\n    \r\n\r\n    # \u4ee5\u4e0b\u3001\u3068\u308a\u3042\u3048\u305a\u6570\u5f0f\u306b\u306f\u306a\u3063\u3066\u3044\u308b\r\n    \r\n    # \u30bc\u30ed\u306f\u5bfe\u6570\u8a08\u7b97\u304c\u3067\u304d\u306a\u3044\r\n    if exprClass == "<class 'sympy.core.numbers.Zero'>":\r\n        sign = 0\r\n        return sign, orderOfMagnitude, "is Zero."    \r\n    \r\n    if exprClass in typeArray:\r\n        if expr > 0:\r\n            sign = +1\r\n        else:\r\n            sign = -1\r\n        orderOfMagnitude = int(float(sympy.log(sympy.Abs(expr), 10)))\r\n        return sign, orderOfMagnitude, "float or integer"\r\n    else:\r\n        return sign, orderOfMagnitude, "is expression. But is not numerical value."\r\n\r\n    \r\n    \r\n    \r\ntestArray = []\r\ntestArray.append('0')\r\ntestArray.append('1')\r\ntestArray.append('-1')\r\ntestArray.append('2') \r\ntestArray.append('100')\r\ntestArray.append('123')\r\ntestArray.append('0.010')\r\ntestArray.append('0.012')\r\ntestArray.append('0.00123')\r\n\r\ntestArray.append('-123')\r\ntestArray.append('- 123') # \u7b26\u53f7\u3068\u306e\u9593\u306b\u7a7a\u767d\r\ntestArray.append('-123 ') # \u53f3\u5074\u306b\u7a7a\u767d\r\ntestArray.append(' - 123  ') # \u591a\u6570\u306e\u7a7a\u767d\r\ntestArray.append(' -0123  ') \r\ntestArray.append('-0.123')\r\n\r\ntestArray.append('0.12e-3')\r\ntestArray.append('-0.12e-3')\r\ntestArray.append('-0.12E-3')\r\ntestArray.append('-0.0120e-3')\r\ntestArray.append(' + 0.01200e-3')\r\ntestArray.append('-2.14*10^3')\r\ntestArray.append('-2.14*10**3')\r\n\r\ntestArray.append('123*10^2*3*10^2')\r\ntestArray.append('x*y') \r\ntestArray.append('sin(x)') \r\ntestArray.append('x[0]') \r\ntestArray.append('x1') \r\ntestArray.append('2*pi') \r\n\r\nfor i in range(len(testArray)):\r\n\r\n    tmpStr = testArray[i]\r\n    significantFigures = -1\r\n    orderOfMagnitude = None\r\n    sign = None\r\n    \r\n    \r\n    print('\\nNo. ' + str(i))\r\n    print('"' + tmpStr + '"')\r\n\r\n    sign, orderOfMagnitude, message = getOrderOfMagnitude(tmpStr)    \r\n    print(message)\r\n    print('sign : ' + str(sign) + ', orderOfMagnitude : ' + str(orderOfMagnitude))\r\n\r\n<\/code><\/pre>\n
getOrderOfMagnitude \u3068\u3044\u3046\u95a2\u6570\u306b\u6570\u5f0f\u3092\u6587\u5b57\u5217\u3067\u6e21\u3059\u3068\u3001\u7b26\u53f7\u3068\u30aa\u30fc\u30c0\u30fc\u3068\u6570\u5024\u306a\u306e\u304b\u3069\u3046\u304b\u306a\u3069\u306e\u60c5\u5831\u306e\uff13\u5909\u6570\u3092\u8fd4\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u304c\u5b9f\u884c\u7d50\u679c\u3067\u3059\u3002<\/p>\n
\u200b\r\nNo. 0\r\n"0"\r\nexpr :  0\r\nis Zero.\r\nsign : 0, orderOfMagnitude : None\r\n\r\nNo. 1\r\n"1"\r\nexpr :  1\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : 0\r\n\r\nNo. 2\r\n"-1"\r\nexpr :  -1\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 0\r\n\r\nNo. 3\r\n"2"\r\nexpr :  2\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : 0\r\n\r\nNo. 4\r\n"100"\r\nexpr :  100\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : 2\r\n\r\nNo. 5\r\n"123"\r\nexpr :  123\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : 2\r\n\r\nNo. 6\r\n"0.010"\r\nexpr :  0.0100000000000000\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : -2\r\n\r\nNo. 7\r\n"0.012"\r\nexpr :  0.0120000000000000\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : -1\r\n\r\nNo. 8\r\n"0.00123"\r\nexpr :  0.00123000000000000\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : -2\r\n\r\nNo. 9\r\n"-123"\r\nexpr :  -123\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 2\r\n\r\nNo. 10\r\n"- 123"\r\nexpr :  -123\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 2\r\n\r\nNo. 11\r\n"-123 "\r\nexpr :  -123\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 2\r\n\r\nNo. 12\r\n" - 123  "\r\nexpr :  -123\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 2\r\n\r\nNo. 13\r\n" -0123  "\r\nexpr :  Sympify of expression 'could not parse ' -0123  '' failed, because of exception being raised:\r\nSyntaxError: invalid syntax (<string>, line 1)\r\nis not numerical value or expression.\r\nsign : None, orderOfMagnitude : None\r\n\r\nNo. 14\r\n"-0.123"\r\nexpr :  -0.123000000000000\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 0\r\n\r\nNo. 15\r\n"0.12e-3"\r\nexpr :  0.000120000000000000\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : -3\r\n\r\nNo. 16\r\n"-0.12e-3"\r\nexpr :  -0.000120000000000000\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : -3\r\n\r\nNo. 17\r\n"-0.12E-3"\r\nexpr :  -0.000120000000000000\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : -3\r\n\r\nNo. 18\r\n"-0.0120e-3"\r\nexpr :  -1.20000000000000e-5\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : -4\r\n\r\nNo. 19\r\n" + 0.01200e-3"\r\nexpr :  1.20000000000000e-5\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : -4\r\n\r\nNo. 20\r\n"-2.14*10^3"\r\nexpr :  -2140.00000000000\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 3\r\n\r\nNo. 21\r\n"-2.14*10**3"\r\nexpr :  -2140.00000000000\r\nfloat or integer\r\nsign : -1, orderOfMagnitude : 3\r\n\r\nNo. 22\r\n"123*10^2*3*10^2"\r\nexpr :  3690000\r\nfloat or integer\r\nsign : 1, orderOfMagnitude : 6\r\n\r\nNo. 23\r\n"x*y"\r\nexpr :  x*y\r\nis expression. But is not numerical value.\r\nsign : None, orderOfMagnitude : None\r\n\r\nNo. 24\r\n"sin(x)"\r\nexpr :  sin(x)\r\nis expression. But is not numerical value.\r\nsign : None, orderOfMagnitude : None\r\n\r\nNo. 25\r\n"x[0]"\r\nexpr :  'Symbol' object is not subscriptable\r\nis expression. But is not numerical value.\r\nsign : None, orderOfMagnitude : None\r\n\r\nNo. 26\r\n"x1"\r\nexpr :  x1\r\nis expression. But is not numerical value.\r\nsign : None, orderOfMagnitude : None\r\n\r\nNo. 27\r\n"2*pi"\r\nexpr :  2*pi\r\nis expression. But is not numerical value.\r\nsign : None, orderOfMagnitude : None\r\n\r\n\u200b<\/code><\/pre>\n
<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
Pyhton \u3067\u3001\u6570\u5024\u306e\u30aa\u30fc\u30c0\u30fc\u3092\u53d6\u5f97\u3059\u308b\u30b3\u30fc\u30c9\u3092\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u3002\u4f8b\u3048\u3070\u3001\u6570\u5024\u304c … Read More »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-12277","post","type-post","status-publish","format-standard","hentry","category-column"],"_links":{"self":[{"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/12277","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12277"}],"version-history":[{"count":12,"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/12277\/revisions"}],"predecessor-version":[{"id":12296,"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/12277\/revisions\/12296"}],"wp:attachment":[{"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12277"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zairyo.susi.oita-u.ac.jp\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}