Python 中pandas.read_excel详细介绍

yipeiwu_com6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交换变量

如: 代码如下:a, b, c = b, c, a来个复杂一点的例子,再来一顿家喻户晓的“冒泡排序”吧: 代码如下:array =...

Python获取当前公网ip并自动断开宽带连接实例代码

今天写了一个获取当前公网ip并且自动断开宽带连接的文件,和大家分享下。 这个文件的具体用途大家懂的,可以尽管拿去用,不过目前只适用于Windows平台,我的Python版本是2.7的,...

Python脚本实现12306火车票查询系统

Python脚本实现12306火车票查询系统

最近我看到看到使用python实现火车票查询,我自己也实现了,感觉收获蛮多的,下面我就把每一步骤都详细给分享出来。(注意使用的是python3) 首先我将最终结果给展示出来: 在cmd命...

Python中单线程、多线程和多进程的效率对比实验实例

python的多进程性能要明显优于多线程,因为cpython的GIL对性能做了约束。 Python是运行在解释器中的语言,查找资料知道,python中有一个全局锁(GIL),在使用多进程...

基于python的图片修复程序(实现水印去除)

基于python的图片修复程序(实现水印去除)

图片修复程序-可用于水印去除 在现实的生活中,我们可能会遇到一些美好的或是珍贵的图片被噪声干扰,比如旧照片的折痕,比如镜头上的灰尘或污渍,更或者是某些我们想为我所用但有讨厌水印,那么有...