The parameter index_col specifies the name of the column with the row labels. Note that this inserts an extra row after the header that starts with ID. You can fix this behavior with the following line of code:Python >>> df.index.name = None >>> df COUNTRY POP AREA GDP CONT IND_...
read_excel('file.xlsx', sheet_name='表1', header=0) # 从 SQL 表/库导入数据 pd.read_sql(query, connection_object) # 从 JSON 格式的字符串导入数据 pd.read_json(json_string) # 解析 URL、字符串或者 HTML 文件,抽取其中的 tables 表格 pd.read_html(url) # 从你的粘贴板获取内容,并传给 ...
1,3],na_values=['null'])#sep参数用于指定换行符,csv文件的换行符为逗号,此处实际上不需要再进行指定#names参数为导入的csv表重新指定column#默认认为第一行为其column#也可以使用header指定用作列名的行数#index_col用于指定索引行,默认认为第一列是索引列#na_values用于指定缺失值的展现形式#encoding参数用于...
Before using this function you should read thegotchas about the HTML parsing libraries. Expect to do some cleanup after you call this function. For example, you might need to manually assign column names if the column names are converted to NaN when you pass theheader=0argument. We try to ...
Return a subset of the columns. If list-like, all elements must either be positional (i.e. integer indices into the document columns) or strings that correspond to column names provided either by the user in names or inferred from the document header row(s). For example, a valid list-li...
pd.read_excel('tmp.xlsx', index_col=None, header=None) 0 1 2 0 NaN Name Value 1 0.0 string1 1 2 1.0 string2 2 3 2.0 #Comment 3 1. 2. 3. 4. 5. 6. 3、列类型是推断式的,但可以显式指定 pd.read_excel('tmp.xlsx', index_col=0, ...
kurtosis([axis, skipna, level, numeric_only]) 在请求的轴上返回无偏峰度。last(offset) 根据日期偏移量选择时间序列数据的最后时段。last_valid_index() 返回上一个非NA /空值的索引。le(other[, axis, level]) 小于或等于dataframe和其他逐元素(二进制运算符)。lookup(row_labels, col_labels) DataFrame...
Expect to do some cleanup after you call this function. For example, you might need to manually assign column names if the column names are converted to NaN when you pass the `header=0` argument. We try to assume as little as possible about the structure of the table and push the idios...
set_index(keys[, drop, append ]) #Set the DataFrame index (row labels) using one or more existing columns. DataFrame.tail([n]) #返回最后几行 DataFrame.take(indices[, axis, convert]) #Analogous to ndarray.take DataFrame.truncate([before, after, axis ]) #Truncates a sorted NDFrame ...
read_excel('file.xlsx', sheet_name='表1', header=0) #从 SQL 表/库导入数据 pd.read_sql(query, connection_object) #从 JSON 格式的字符串导入数据 pd.read_json(json_string) # 解析 URL、字符串或者 HTML 文件,抽取其中的 tables 表格 pd.read_html(url) # 从你的粘贴板获取内容,并传给 ...