{"id":3113,"date":"2017-03-30T19:54:00","date_gmt":"2017-03-30T11:54:00","guid":{"rendered":"https:\/\/shanlin.info\/?p=3113"},"modified":"2021-04-25T19:55:37","modified_gmt":"2021-04-25T11:55:37","slug":"%e7%ac%a8%e5%8a%9e%e6%b3%95%e5%ad%a6%e5%88%86%e6%9e%9003pandas%e7%9a%84read_csv%e7%9a%84%e5%8f%82%e6%95%b0","status":"publish","type":"post","link":"https:\/\/shanlin.info\/?p=3113","title":{"rendered":"\u7b28\u529e\u6cd5\u5b66\u5206\u6790[03]Pandas\u7684read_csv\u7684\u53c2\u6570"},"content":{"rendered":"\n<h4 class=\"wp-block-heading\">Pandas\u7684read_csv\u7684\u53c2\u6570<\/h4>\n\n\n\n<blockquote class=\"wp-block-quote\"><p>pd.read_csv(filepath_or_buffer, sep=&#8217;,&#8217;, delimiter=None, header=&#8217;infer&#8217;, names=None, index_col=None, usecols=None, squeeze=False, prefix=None, mangle_dupe_cols=True, dtype=None, engine=None, converters=None, true_values=None, false_values=None, skipinitialspace=False, skiprows=None, nrows=None, na_values=None, keep_default_na=True, na_filter=True, verbose=False, skip_blank_lines=True, parse_dates=False, infer_datetime_format=False, keep_date_col=False, date_parser=None, dayfirst=False, iterator=False, chunksize=None, compression=&#8217;infer&#8217;, thousands=None, decimal=b&#8217;.&#8217;, lineterminator=None, quotechar='&#8221;&#8216;, quoting=0, escapechar=None, comment=None, encoding=None, dialect=None, tupleize_cols=False, error_bad_lines=True, warn_bad_lines=True, skipfooter=0, skip_footer=0, doublequote=True, delim_whitespace=False, as_recarray=False, compact_ints=False, use_unsigned=False, low_memory=True, buffer_lines=None, memory_map=False, float_precision=None)<\/p><\/blockquote>\n\n\n\n<ul><li><strong>\u5fc5\u586b\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>filepath_or_buffer : str\uff0cpathlib\u3002str, pathlib.Path,\npy._path.local.LocalPath or any object with a read() method \n(such as a file handle or StringIO)\n\u8bfb\u53d6\u6587\u4ef6\u8def\u5f84\uff0c\u53ef\u4ee5\u662fURL\uff0c\u53ef\u7528URL\u7c7b\u578b\u5305\u62ec\uff1ahttp, ftp, s3\u548c\u6587\u4ef6\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sep :str, default \u2018,\u2019\n\u6307\u5b9a\u5206\u9694\u7b26\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u53c2\u6570\uff0c\u5219\u4f1a\u5c1d\u8bd5\u4f7f\u7528\u9017\u53f7\u5206\u9694\u3002csv\u6587\u4ef6\u4e00\u822c\u4e3a\u9017\u53f7\u5206\u9694\u7b26\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>delimiter \uff1a str, default None\n\u5b9a\u754c\u7b26\uff0c\u5907\u9009\u5206\u9694\u7b26\uff08\u5982\u679c\u6307\u5b9a\u8be5\u53c2\u6570\uff0c\u5219sep\u53c2\u6570\u5931\u6548\uff09\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>delim_whitespace :boolean, default False.\n\u6307\u5b9a\u7a7a\u683c(\u4f8b\u5982\u2019 \u2018\u6216\u8005\u2019 \u2018)\u662f\u5426\u4f5c\u4e3a\u5206\u9694\u7b26\u4f7f\u7528\uff0c\u7b49\u6548\u4e8e\u8bbe\u5b9asep='\\s+'\u3002\n\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u5b9a\u4e3aTure\u90a3\u4e48delimiter \u53c2\u6570\u5931\u6548\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong>\uff0c\u5bf9\u4e8e\u6570\u636e\u8bfb\u53d6\u6709\u8868\u5934\u548c\u6ca1\u8868\u5934\u7684\u60c5\u51b5\u5f88\u5b9e\u7528<\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>header :int or list of ints, default \u2018infer\u2019\n\u6307\u5b9a\u884c\u6570\u7528\u6765\u4f5c\u4e3a\u5217\u540d\uff0c\u6570\u636e\u5f00\u59cb\u884c\u6570\u3002\u5982\u679c\u6587\u4ef6\u4e2d\u6ca1\u6709\u5217\u540d\uff0c\u5219\u9ed8\u8ba4\u4e3a0\uff0c\u5426\u5219\u8bbe\u7f6e\u4e3aNone\u3002\n\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>names :  array-like, default None\n\u7528\u4e8e\u7ed3\u679c\u7684\u5217\u540d\u5217\u8868\uff0c\u5bf9\u5404\u5217\u91cd\u547d\u540d\uff0c\u5373\u6dfb\u52a0\u8868\u5934\u3002\n\u5982\u6570\u636e\u6709\u8868\u5934\uff0c\u4f46\u60f3\u7528\u65b0\u7684\u8868\u5934\uff0c\u53ef\u4ee5\u8bbe\u7f6eheader=0,names=&#91;'a','b']\u5b9e\u73b0\u8868\u5934\u5b9a\u5236\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>index_col : int or sequence or False, default None\n\u7528\u4f5c\u884c\u7d22\u5f15\u7684\u5217\u7f16\u53f7\u6216\u8005\u5217\u540d\uff0c\u5982\u679c\u7ed9\u5b9a\u4e00\u4e2a\u5e8f\u5217\u5219\u6709\u591a\u4e2a\u884c\u7d22\u5f15\u3002\n\u53ef\u4f7f\u7528index_col=&#91;0,1]\u6765\u6307\u5b9a\u6587\u4ef6\u4e2d\u7684\u7b2c1\u548c2\u5217\u4e3a\u7d22\u5f15\u5217\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>usecols : array-like, default None\n\u8fd4\u56de\u4e00\u4e2a\u6570\u636e\u5b50\u96c6\uff0c\u5373\u9009\u53d6\u67d0\u51e0\u5217\uff0c\u4e0d\u8bfb\u53d6\u6574\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u6709\u52a9\u4e8e\u52a0\u5feb\u901f\u5ea6\u548c\u964d\u4f4e\u5185\u5b58\u3002\nusecols=&#91;1,2]\u6216usercols=&#91;'a','b']\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>squeeze : boolean, default False\n\u5982\u679c\u6587\u4ef6\u53ea\u5305\u542b\u4e00\u5217\uff0c\u5219\u8fd4\u56de\u4e00\u4e2aSeries\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>prefix :  str, default None\n\u5728\u6ca1\u6709\u5217\u6807\u9898\u65f6\uff0c\u7ed9\u5217\u6dfb\u52a0\u524d\u7f00\u3002\u4f8b\u5982\uff1a\u6dfb\u52a0\u2018X\u2019 \u6210\u4e3a X0, X1, ...\n\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mangle_dupe_cols : boolean, default True\n\u91cd\u590d\u7684\u5217\uff0c\u5c06\u2018X\u2019...\u2019X\u2019\u8868\u793a\u4e3a\u2018X.0\u2019...\u2019X.N\u2019\u3002\u5982\u679c\u8bbe\u5b9a\u4e3aFalse\u5219\u4f1a\u5c06\u6240\u6709\u91cd\u540d\u5217\u8986\u76d6\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong>\uff0c\u8fd9\u4e2a\u5176\u5b9e\u53ef\u80fd\u4e0d\u5e38\u7528<\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dtype : Type name or dict of column -&gt; type, default None\n\u6bcf\u5217\u6570\u636e\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f8b\u5982 {\u2018a\u2019: np.float64, \u2018b\u2019: np.int32}\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>engine :  {\u2018c\u2019, \u2018python\u2019}, optional\n\u4f7f\u7528\u7684\u5206\u6790\u5f15\u64ce\u3002\u53ef\u4ee5\u9009\u62e9C\u6216\u8005\u662fpython\u3002C\u5f15\u64ce\u5feb\u4f46\u662fPython\u5f15\u64ce\u529f\u80fd\u66f4\u52a0\u5b8c\u5907\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>converters : dict, default None\n\u5217\u8f6c\u6362\u51fd\u6570\u7684\u5b57\u5178\u3002key\u53ef\u4ee5\u662f\u5217\u540d\u6216\u8005\u5217\u7684\u5e8f\u53f7\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>true_values\u548cfalse_values :  list, default None\nValues to consider as True or False\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>skipinitialspace :boolean, default False\n\u5ffd\u7565\u5206\u9694\u7b26\u540e\u7684\u7a7a\u767d\uff08\u9ed8\u8ba4\u4e3aFalse\uff0c\u5373\u4e0d\u5ffd\u7565\uff09\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>skiprows : list-like or integer, default None\n\u9700\u8981\u5ffd\u7565\u7684\u884c\u6570\uff08\u4ece\u6587\u4ef6\u5f00\u59cb\u5904\u7b97\u8d77\uff09\uff0c\u6216\u9700\u8981\u8df3\u8fc7\u7684\u884c\u53f7\u5217\u8868\uff08\u4ece0\u5f00\u59cb\uff09\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>skipfooter : int, default 0\n\u4ece\u6587\u4ef6\u5c3e\u90e8\u5f00\u59cb\u5ffd\u7565\u3002 (c\u5f15\u64ce\u4e0d\u652f\u6301)\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nrows : int, default None\n\u9700\u8981\u8bfb\u53d6\u7684\u884c\u6570\uff08\u4ece\u6587\u4ef6\u5934\u5f00\u59cb\u7b97\u8d77\uff09\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>na_values : scalar, str, list-like, or dict, default None\n\u4e00\u7ec4\u7528\u4e8e\u66ff\u6362NA\/NaN\u7684\u503c\u3002\u5982\u679c\u4f20\u53c2\uff0c\u9700\u8981\u5236\u5b9a\u7279\u5b9a\u5217\u7684\u7a7a\u503c\u3002\n\u9ed8\u8ba4\u4e3a\u20181.#IND\u2019, \u20181.#QNAN\u2019, \u2018N\/A\u2019, \u2018NA\u2019, \u2018NULL\u2019, \u2018NaN\u2019, \u2018nan\u2019`.\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>keep_default_na :  bool, default True\n\u5982\u679c\u6307\u5b9ana_values\u53c2\u6570\uff0c\u5e76\u4e14keep_default_na=False\uff0c\u90a3\u4e48\u9ed8\u8ba4\u7684NaN\u5c06\u88ab\u8986\u76d6\uff0c\u5426\u5219\u6dfb\u52a0\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>na_filter : boolean, default True\n\u662f\u5426\u68c0\u67e5\u4e22\u5931\u503c\uff08\u7a7a\u5b57\u7b26\u4e32\u6216\u8005\u662f\u7a7a\u503c\uff09\u3002\n\u5bf9\u4e8e\u5927\u6587\u4ef6\u6765\u8bf4\u6570\u636e\u96c6\u4e2d\u6ca1\u6709\u7a7a\u503c\uff0c\u8bbe\u5b9ana_filter=False\u53ef\u4ee5\u63d0\u5347\u8bfb\u53d6\u901f\u5ea6\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>verbose :boolean, default False\n\u662f\u5426\u6253\u5370\u5404\u79cd\u89e3\u6790\u5668\u7684\u8f93\u51fa\u4fe1\u606f\uff0c\u4f8b\u5982\uff1a\u201c\u975e\u6570\u503c\u5217\u4e2d\u7f3a\u5931\u503c\u7684\u6570\u91cf\u201d\u7b49\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>skip_blank_lines :boolean, default True\n\u5982\u679c\u4e3aTrue\uff0c\u5219\u8df3\u8fc7\u7a7a\u884c\uff1b\u5426\u5219\u8bb0\u4e3aNaN\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong>\uff0c\u4e3b\u8981\u7528\u4e8e\u6307\u5b9a\u65e5\u671f\u7c7b\u578b<\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>parse_dates : boolean or list of ints or names or list of lists or dict, default False\n\nboolean. True -&gt; \u89e3\u6790\u7d22\u5f15\nlist of ints or names. e.g. If &#91;1, 2, 3] -&gt; \u89e3\u67901,2,3\u5217\u7684\u503c\u4f5c\u4e3a\u72ec\u7acb\u7684\u65e5\u671f\u5217\uff1b\nlist of lists. e.g. If &#91;&#91;1, 3]] -&gt; \u5408\u5e761,3\u5217\u4f5c\u4e3a\u4e00\u4e2a\u65e5\u671f\u5217\u4f7f\u7528\ndict, e.g. {\u2018foo\u2019 : &#91;1, 3]} -&gt; \u5c061,3\u5217\u5408\u5e76\uff0c\u5e76\u7ed9\u5408\u5e76\u540e\u7684\u5217\u8d77\u540d\u4e3a\"foo\"\n\n\u793a\u4f8b\uff1adf=pd.read_csv(file_path,parse_dates=&#91;'time1','time2'])\uff0c\n\u628atime1\u548ctime2\u4e24\u5217\u89e3\u6790\u4e3a\u65e5\u671f\u683c\u5f0f\u3002\n\u8fd9\u91cc\u4e0d\u5f97\u4e0d\u8bf4\uff0c\u5f88\u9057\u61be\u4e2d\u6587\u4e0d\u884c\uff0c\u6bd4\u5982\u20184\u67085\u65e5\u2019\u8fd9\u79cd\u683c\u5f0f\u5c31\u4e0d\u80fd\u89e3\u6790\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>infer_datetime_format :boolean, default False\n\u5982\u679c\u8bbe\u5b9a\u4e3aTrue\u5e76\u4e14parse_dates \u53ef\u7528\uff0c\u90a3\u4e48pandas\u5c06\u5c1d\u8bd5\u8f6c\u6362\u4e3a\u65e5\u671f\u7c7b\u578b\uff0c\u5982\u679c\u53ef\u4ee5\u8f6c\u6362\uff0c\u8f6c\u6362\u65b9\u6cd5\u5e76\u89e3\u6790\u3002\n\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u4f1a\u5feb5~10\u500d\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>keep_date_col : boolean, default False\n\u5982\u679c\u8fde\u63a5\u591a\u5217\u89e3\u6790\u65e5\u671f\uff0c\u5219\u4fdd\u6301\u53c2\u4e0e\u8fde\u63a5\u7684\u5217\u3002\u9ed8\u8ba4\u4e3aFalse\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>date_parser :  function, default None\n\u4e8e\u89e3\u6790\u65e5\u671f\u7684\u51fd\u6570\uff0c\u9ed8\u8ba4\u4f7f\u7528dateutil.parser.parser\u6765\u505a\u8f6c\u6362\u3002\nPandas\u5c1d\u8bd5\u4f7f\u7528\u4e09\u79cd\u4e0d\u540c\u7684\u65b9\u5f0f\u89e3\u6790\uff0c\u5982\u679c\u9047\u5230\u95ee\u9898\u5219\u4f7f\u7528\u4e0b\u4e00\u79cd\u65b9\u5f0f\u3002\n1.\u4f7f\u7528\u4e00\u4e2a\u6216\u8005\u591a\u4e2aarrays\uff08\u7531parse_dates\u6307\u5b9a\uff09\u4f5c\u4e3a\u53c2\u6570\uff1b\n2.\u8fde\u63a5\u6307\u5b9a\u591a\u5217\u5b57\u7b26\u4e32\u4f5c\u4e3a\u4e00\u4e2a\u5217\u4f5c\u4e3a\u53c2\u6570\uff1b\n3.\u6bcf\u884c\u8c03\u7528\u4e00\u6b21date_parser\u51fd\u6570\u6765\u89e3\u6790\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5b57\u7b26\u4e32\uff08\u7531parse_dates\u6307\u5b9a\uff09\u4f5c\u4e3a\u53c2\u6570\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dayfirst : boolean, default False\nDD\/MM\u683c\u5f0f\u7684\u65e5\u671f\u7c7b\u578b\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5927\u6587\u4ef6\u5e38\u7528\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>iterator : boolean, default False\n\u8fd4\u56de\u4e00\u4e2aTextFileReader \u5bf9\u8c61\uff0c\u4ee5\u4fbf\u9010\u5757\u5904\u7406\u6587\u4ef6\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5927\u6587\u4ef6\u5e38\u7528\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>chunksize : int, default None\n\u6587\u4ef6\u5757\u7684\u5927\u5c0f\uff0c See IO Tools docs for more informationon iterator and chunksize.\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>compression : {\u2018infer\u2019, \u2018gzip\u2019, \u2018bz2\u2019, \u2018zip\u2019, \u2018xz\u2019, None}, default \u2018infer\u2019\n\u76f4\u63a5\u4f7f\u7528\u78c1\u76d8\u4e0a\u7684\u538b\u7f29\u6587\u4ef6\u3002\u5982\u679c\u4f7f\u7528infer\u53c2\u6570\uff0c\u5219\u4f7f\u7528 gzip, bz2, zip\u6216\u8005\u89e3\u538b\u6587\u4ef6\u540d\u4e2d\u4ee5\u2018.gz\u2019, \u2018.bz2\u2019, \u2018.zip\u2019, or \u2018xz\u2019\u8fd9\u4e9b\u4e3a\u540e\u7f00\u7684\u6587\u4ef6\uff0c\u5426\u5219\u4e0d\u89e3\u538b\u3002\n\u5982\u679c\u4f7f\u7528zip\uff0c\u90a3\u4e48ZIP\u5305\u4e2d\u5fc5\u987b\u53ea\u5305\u542b\u4e00\u4e2a\u6587\u4ef6\u3002\u8bbe\u7f6e\u4e3aNone\u5219\u4e0d\u89e3\u538b\u3002\n\u65b0\u7248\u672c0.18.1\u7248\u672c\u652f\u6301zip\u548cxz\u89e3\u538b\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>thousands : str, default None\n\u5343\u5206\u4f4d\u5206\u5272\u7b26\uff0c\u5982\u201c\uff0c\u201d\u6216\u8005\u201c.\"\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>decimal : str, default \u2018.\u2019\n\u5b57\u7b26\u4e2d\u7684\u5c0f\u6570\u70b9 (\u4f8b\u5982\uff1a\u6b27\u6d32\u6570\u636e\u4f7f\u7528\u2019\uff0c\u2018).\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>float_precision : string, default None\nSpecifies which converter the C engine should use for floating-point values. \nThe options are None for the ordinary converter, high for the high-precision converter,\nand round_trip for the round-trip converter.\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>lineterminator : str (length 1), default None\n\u884c\u5206\u5272\u7b26\uff0c\u53ea\u5728C\u89e3\u6790\u5668\u4e0b\u4f7f\u7528\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>quotechar : str (length 1), optional\n\u5f15\u53f7\uff0c\u7528\u4f5c\u6807\u8bc6\u5f00\u59cb\u548c\u89e3\u91ca\u7684\u5b57\u7b26\uff0c\u5f15\u53f7\u5185\u7684\u5206\u5272\u7b26\u5c06\u88ab\u5ffd\u7565\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>quoting : int or csv.QUOTE_* instance, default 0\n\u63a7\u5236csv\u4e2d\u7684\u5f15\u53f7\u5e38\u91cf\u3002\n\u53ef\u9009 QUOTE_MINIMAL (0), QUOTE_ALL (1), QUOTE_NONNUMERIC (2) or QUOTE_NONE (3)\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>doublequote : boolean, default True\n\u53cc\u5f15\u53f7\uff0c\u5f53\u5355\u5f15\u53f7\u5df2\u7ecf\u88ab\u5b9a\u4e49\uff0c\u5e76\u4e14quoting \u53c2\u6570\u4e0d\u662fQUOTE_NONE\u7684\u65f6\u5019\uff0c\n\u4f7f\u7528\u53cc\u5f15\u53f7\u8868\u793a\u5f15\u53f7\u5185\u7684\u5143\u7d20\u4f5c\u4e3a\u4e00\u4e2a\u5143\u7d20\u4f7f\u7528\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>escapechar : str (length 1), default None\n\u5f53quoting \u4e3aQUOTE_NONE\u65f6\uff0c\u6307\u5b9a\u4e00\u4e2a\u5b57\u7b26\u4f7f\u7684\u4e0d\u53d7\u5206\u9694\u7b26\u9650\u503c\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>comment : str, default None\n\u6807\u8bc6\u7740\u591a\u4f59\u7684\u884c\u4e0d\u88ab\u89e3\u6790\u3002\u5982\u679c\u8be5\u5b57\u7b26\u51fa\u73b0\u5728\u884c\u9996\uff0c\u8fd9\u4e00\u884c\u5c06\u88ab\u5168\u90e8\u5ffd\u7565\u3002\n\u8fd9\u4e2a\u53c2\u6570\u53ea\u80fd\u662f\u4e00\u4e2a\u5b57\u7b26\uff0c\u7a7a\u884c\uff08\u5c31\u50cfskip_blank_lines=True\uff09\u6ce8\u91ca\u884c\u88abheader\u548cskiprows\u5ffd\u7565\u4e00\u6837\u3002\n\u4f8b\u5982\u5982\u679c\u6307\u5b9acomment='#' \u89e3\u6790\u2018#empty\\na,b,c\\n1,2,3\u2019 \u4ee5header=0 \u90a3\u4e48\u8fd4\u56de\u7ed3\u679c\u5c06\u662f\u4ee5\u2019a,b,c'\u4f5c\u4e3aheader\u3002\n<\/code><\/pre>\n\n\n\n<ul><li><strong>\u5e38\u7528\u53c2\u6570<\/strong><\/li><\/ul>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>encoding : str, default None\n\u6307\u5b9a\u5b57\u7b26\u96c6\u7c7b\u578b\uff0c\u901a\u5e38\u6307\u5b9a\u4e3a'utf-8'. List of Python standard encodings\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dialect : str or csv.Dialect instance, default None\n\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u7279\u5b9a\u7684\u8bed\u8a00\uff0c\u5982\u679csep\u5927\u4e8e\u4e00\u4e2a\u5b57\u7b26\u5219\u5ffd\u7565\u3002\u5177\u4f53\u67e5\u770bcsv.Dialect \u6587\u6863\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>tupleize_cols : boolean, default False\nLeave a list of tuples on columns as is (default is to convert to a Multi Index on the columns)\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>error_bad_lines : boolean, default True\n\u5982\u679c\u4e00\u884c\u5305\u542b\u592a\u591a\u7684\u5217\uff0c\u90a3\u4e48\u9ed8\u8ba4\u4e0d\u4f1a\u8fd4\u56deDataFrame \uff0c\u5982\u679c\u8bbe\u7f6e\u6210false\uff0c\u90a3\u4e48\u4f1a\u5c06\u6539\u884c\u5254\u9664\uff08\u53ea\u80fd\u5728C\u89e3\u6790\u5668\u4e0b\u4f7f\u7528\uff09\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>warn_bad_lines : boolean, default True\n\u5982\u679cerror_bad_lines =False\uff0c\u5e76\u4e14warn_bad_lines =True \u90a3\u4e48\u6240\u6709\u7684\u201cbad lines\u201d\u5c06\u4f1a\u88ab\u8f93\u51fa\uff08\u53ea\u80fd\u5728C\u89e3\u6790\u5668\u4e0b\u4f7f\u7528\uff09\u3002\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>low_memory : boolean, default True\n\u5206\u5757\u52a0\u8f7d\u5230\u5185\u5b58\uff0c\u5728\u4f4e\u5185\u5b58\u6d88\u8017\u4e2d\u89e3\u6790\u3002\u4f46\u662f\u53ef\u80fd\u51fa\u73b0\u7c7b\u578b\u6df7\u6dc6\u3002\n\u786e\u4fdd\u7c7b\u578b\u4e0d\u88ab\u6df7\u6dc6\u9700\u8981\u8bbe\u7f6e\u4e3aFalse\u3002\u6216\u8005\u4f7f\u7528dtype \u53c2\u6570\u6307\u5b9a\u7c7b\u578b\u3002\n\u6ce8\u610f\u4f7f\u7528chunksize \u6216\u8005iterator \u53c2\u6570\u5206\u5757\u8bfb\u5165\u4f1a\u5c06\u6574\u4e2a\u6587\u4ef6\u8bfb\u5165\u5230\u4e00\u4e2aDataframe\uff0c\n\u800c\u5ffd\u7565\u7c7b\u578b\uff08\u53ea\u80fd\u5728C\u89e3\u6790\u5668\u4e2d\u6709\u6548\uff09\n<\/code><\/pre>\n\n\n\n<p><em><\/em><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#\u8bfb\u53d6\u591a\u4e2a\u6587\u4ef6\nimport pandas\nimport glob\nfor r in glob.glob(\"test*.csv\"):\n        csv=pandas.read_csv(r)\n        csv.to_csv(\"test.txt\",mode=\"a+\")<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Pandas\u7684read_csv\u7684\u53c2\u6570 pd.read_csv(filepath_or_buffer, sep=<\/p><\/div>\n<div class=\"blog-btn\"><a href=\"https:\/\/shanlin.info\/?p=3113\" class=\"home-blog-btn\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/shanlin.info\/index.php?rest_route=\/wp\/v2\/posts\/3113"}],"collection":[{"href":"https:\/\/shanlin.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shanlin.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shanlin.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/shanlin.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3113"}],"version-history":[{"count":1,"href":"https:\/\/shanlin.info\/index.php?rest_route=\/wp\/v2\/posts\/3113\/revisions"}],"predecessor-version":[{"id":3114,"href":"https:\/\/shanlin.info\/index.php?rest_route=\/wp\/v2\/posts\/3113\/revisions\/3114"}],"wp:attachment":[{"href":"https:\/\/shanlin.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shanlin.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shanlin.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}