Python 中pandas.read_excel详细介绍

yipeiwu_com5年前Python基础

Python 中pandas.read_excel详细介绍

#coding:utf-8
import pandas as pd
import numpy as np

filefullpath = r"/home/geeklee/temp/all_gov_file/pol_gov_mon/downloads/1.xls"
#filefullpath = r"/home/geeklee/temp/all_gov_file/pol_gov_mon/downloads/26368f3a-ea03-46b9-8033-73615ed07816.xls"
df = pd.read_excel(filefullpath,skiprows=[0])
#df = pd.read_excel(filefullpath, sheetname=[0,2],skiprows=[0])
#sheetname指定为读取几个sheet,sheet数目从0开始
#如果sheetname=[0,2],那代表读取第0页和第2页的sheet
#skiprows=[0]代表读取跳过的行数第0行,不写代表不跳过标题
#df = pd.read_excel(filefullpath, sheetname=None ,skiprows=[0])

print df
print type(df)
#若果有多页,type(df)就为<type 'dict'>
#如果就一页,type(df)就为<class 'pandas.core.frame.DataFrame'>
#{0:dataframe,1:dataframe,2:dataframe}

pandas.read_excel(io, sheetname=0, header=0, skiprows=None, skip_footer=0,
 index_col=None, names=None, parse_cols=None, parse_dates=False, date_parser=None,
 na_values=None, thousands=None, convert_float=True, has_index_names=None, converters=None,
 engine=None, squeeze=False, **kwds)

Read an Excel table into a pandas DataFrame

参数解析:

io : string, path object (pathlib.Path or py._path.local.LocalPath),

  file-like object, pandas ExcelFile, or xlrd workbook. The string could be a URL. Valid URL schemes include http, ftp, s3, and file. For file URLs, a host is expected. For instance, a local file could be file://localhost/path/to/workbook.xlsx

sheetname : string, int, mixed list of strings/ints, or None, default 0

  Strings are used for sheet names, Integers are used in zero-indexed sheet positions.

  Lists of strings/integers are used to request multiple sheets.

  Specify None to get all sheets.

  str|int -> DataFrame is returned. list|None -> Dict of DataFrames is returned, with keys representing sheets.

  Available Cases

    Defaults to 0 -> 1st sheet as a DataFrame
    1 -> 2nd sheet as a DataFrame
    “Sheet1” -> 1st sheet as a DataFrame
    [0,1,”Sheet5”] -> 1st, 2nd & 5th sheet as a dictionary of DataFrames
    None -> All sheets as a dictionary of DataFrames

header : int, list of ints, default 0

  Row (0-indexed) to use for the column labels of the parsed DataFrame. If a list of integers is passed those row positions will be combined into a MultiIndex

skiprows : list-like

  Rows to skip at the beginning (0-indexed)

skip_footer : int, default 0

  Rows at the end to skip (0-indexed)

index_col : int, list of ints, default None

  Column (0-indexed) to use as the row labels of the DataFrame. Pass None if there is no such column. If a list is passed, those columns will be combined into a MultiIndex

names : array-like, default None

  List of column names to use. If file contains no header row, then you should explicitly pass header=None

converters : dict, default None

  Dict of functions for converting values in certain columns. Keys can either be integers or column labels, values are functions that take one input argument, the Excel cell content, and return the transformed content.

parse_cols : int or list, default None

    If None then parse all columns,
    If int then indicates last column to be parsed
    If list of ints then indicates list of column numbers to be parsed
    If string then indicates comma separated list of column names and column ranges (e.g. “A:E” or “A,C,E:F”)

squeeze : boolean, default False

  If the parsed data only contains one column then return a Series

na_values : list-like, default None

  List of additional strings to recognize as NA/NaN

thousands : str, default None

  Thousands separator for parsing string columns to numeric. Note that this parameter is only necessary for columns stored as TEXT in Excel, any numeric columns will automatically be parsed, regardless of display format.

keep_default_na : bool, default True

  If na_values are specified and keep_default_na is False the default NaN values are overridden, otherwise they're appended to

verbose : boolean, default False

  Indicate number of NA values placed in non-numeric columns

engine: string, default None

  If io is not a buffer or path, this must be set to identify io. Acceptable values are None or xlrd

convert_float : boolean, default True

  convert integral floats to int (i.e., 1.0 –> 1). If False, all numeric data will be read in as floats: Excel stores all numbers as floats internally

has_index_names : boolean, default None

  DEPRECATED: for version 0.17+ index names will be automatically inferred based on index_col. To read Excel output from 0.16.2 and prior that had saved index names, use True.

return返回的结果

parsed : DataFrame or Dict of DataFrames

  DataFrame from the passed in Excel file. See notes in sheetname argument for more information on when a Dict of Dataframes is returned.

感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

相关文章

Python的Django框架中TEMPLATES项的设置教程

TEMPLATES Django 1.8的新特性 一个列表,包含所有在Django中使用的模板引擎的设置。列表中的每一项都是一个字典,包含某个引擎的选项。 以下是一个简单的设定,告诉Dj...

python文件特定行插入和替换实例详解

python文件特定行插入和替换实例详解 python提供了read,write,但和很多语言类似似乎没有提供insert。当然真要提供的话,肯定是可以实现的,但可能引入insert会带...

Python实现获取本地及远程图片大小的方法示例

Python实现获取本地及远程图片大小的方法示例

本文实例讲述了Python实现获取本地及远程图片大小的方法。分享给大家供大家参考,具体如下: 了解过Pillow的都知道,Pillow是一个非常强大的图片处理器,这篇文章主要记录一下Pi...

跟老齐学Python之Import 模块

跟老齐学Python之Import 模块

认识模块 对于模块,在前面的一些举例中,已经涉及到了,比如曾经有过:import random (获取随机数模块)。为了能够对模块有一个清晰的了解,首先要看看什么模块,这里选取官方文档中...

python不使用for计算两组、多个矩形两两间的iou方式

python不使用for计算两组、多个矩形两两间的iou方式

解决问题: 不使用for计算两组、多个矩形两两间的iou 使用numpy广播的方法,在python程序中并不建议使用for语句,python中的for语句耗时较多,如果使用numpy广播...