usecols=lambda x: x != "SYMPTOM_TEXT") vdata_pd.info(memory_usage="deep") columns.remove("SYMPTOM_TEXT") vdata_arrow = csv.read_csv( "2021VAERSDATA.csv.gz", convert_options=csv.ConvertOptions(include_columns=columns)) vdata_arrow.nbytes ...
vdata_pd = pd.read_csv("2021VAERSDATA.csv.gz", encoding="iso-8859-1", usecols=lambda x: x != "SYMPTOM_TEXT") vdata_pd.info(memory_usage="deep") columns.remove("SYMPTOM_TEXT") vdata_arrow = csv.read_csv( "2021VAERSDATA.csv.gz", convert_options=csv.ConvertOptions(include_columns...
>>> string = 'I love Python' >>> a = string[3:] #得到从3号到最后的字符串 >>> a 'ove Python' >>> b = string[:8] #得到从第1个字符到第7个字符 >>> b 'I love P' >>> c = string[:] #得到所有的字符 >>> c 'I love Python' 是不是觉得很有意思呢?切片的写法还有很多,...
#urltest.py from io import StringIO from unittest import TestCase from unittest.mock import patch import url class TestURLPrint(TestCase): def test_url_gets_to_stdout(self): protocol = 'http' host = 'www' domain = 'example.com' expected_url = '...
进行基于潜在因子推荐的最常见方法是将用户配置文件定义为u[i] ∈ R^k和b[i] ∈ R,项目轮廓和偏差为v[i] ∈ R^k和b[j] ∈ R。 然后,将用户i对项目j提供的评分r_hat[ij]定义如下: [外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-lvm3K7ol-1681654125430)(https://gitcod...
mammoth with open("document.docx", "rb") as docx_file: result = mammoth.convert_to_html...
[01,12].25%p Locale's equivalent of either AM or PM.262728importtime29help(time.asctime)3031Help on built-infunction asctimeinmodule time:3233asctime(...)34asctime([tuple]) ->string3536Convert a time tuple to a string, e.g.'Sat Jun 06 16:26:11 1998'.37When the time tupleisnot...
(position, 0) self.filelist.append(zinfo) ToInfo[zinfo.filename] = zinfo def writestr(self, zinfo_or_arcname, bytes, compress_type=None): """Write a file into the archive. The contents is the string 'bytes'. 'zinfo_or_arcname' is either a ZipInfo instance or the name of the ...
Zimbabwean Dollar,Zimbabwe Dollar", ] # 以下函数计算实际转换 def function1(): query = input( "Please specify the amount of currency to convert, from currency, to currency (with space in between).\nPress SHOW to see list of currencies available. \nPress Q to quit. \n" ) if query =...
0x0B(011): UNARY_NEGATIVE 0x0C(012): UNARY_NOT 0x0D(013): UNARY_CONVERT 0x0E(014): <14> 0x0F(015): UNARY_INVERT 0x10(016): <16> 0x11(017): <17> 0x12(018): LIST_APPEND 0x13(019): BINARY_POWER 0x14(020): BINARY_MULTIPLY ...