How do I concatenate multiple xlsx files with the same sheet_names. For example,
I have 3 xlsx files, Rob_schedule.xlsx, Mike_schdule.xlsx and Jerome_schedule.xlsx.
Each file has the following sheet/tab names : home, office & school.
The code below generates the 3 xlsx files ( you can copy + paste and run to generate the excel files)
##############################Generating the data for Rob_schedule.xlsx########################
import pandas as pd
import numpy as np
df= {
'Date':[10232020,10242020,10252020,10262020],
'Class':['AP_Bio','AP_Chem','Physics','History'],
'Period':[3,1,2,4]}
school = pd.DataFrame(df,columns = ['Date','Class','Period'])
school
df2= {
'Date':[10232020,10242020,10252020,10262020],
'Meeting':['MQ1','MQ6','MQ2','MQ8'],
'Lunch':[1,1,1,3],
'code':['java','python','C','C++']}
office = pd.DataFrame(df2,columns = ['Date','Meeting','Lunch','code'])
office
df3= {
'cooking':['C','B','D','B'],
'Laundry':['color','white','White','color'],
'cleaning':['balcony','garage','restroom','bathroom']}
home = pd.DataFrame(df3,columns = ['cooking','Laundry','cleaning'])
home
import pandas as pd
#initialze the excel writer
writer = pd.ExcelWriter('Rob_schedule.xlsx', engine='xlsxwriter')
#store your dataframes in a dict, where the key is the sheet name you want
frames = {'home':home, 'office':office,
'school':school}
#now loop thru and put each on a specific sheet
for sheet, frame in frames.items():
frame.to_excel(writer, sheet_name = sheet,index = False)
#critical last step
writer.save()
################################ generating Mike_schedule.xlsx###################################
import pandas as pd
import numpy as np
df= {
'Date':[10232020,10242020,10252020,10262020],
'Class':['AP_Bio','AP_Chem','Physics','History'],
'Period':[3,1,2,4]}
school = pd.DataFrame(df,columns = ['Date','Class','Period'])
school
df2= {
'Date':[10232020,10242020,10252020,10262020],
'Meeting':['MQ1','MQ2','MQ4','MQ5'],
'Lunch':[1,1,1,3],
'code':['javascript','R','C','C++']}
office = pd.DataFrame(df2,columns = ['Date','Meeting','Lunch','code'])
office
df3= {
'cooking':['A','B','D','B'],
'Laundry':['color','white','white','color'],
'cleaning':['patio','garage','living_room','bathroom']}
home = pd.DataFrame(df3,columns = ['cooking','Laundry','cleaning'])
home
#initialze the excel writer
writer = pd.ExcelWriter('Mike_schedule.xlsx', engine='xlsxwriter')
#store your dataframes in a dict, where the key is the sheet name you want
frames = {'home':home, 'office':office,
'school':school}
#now loop thru and put each on a specific sheet
for sheet, frame in frames.items(): # .use .items for python 3.X
frame.to_excel(writer, sheet_name = sheet,index = False)
#critical last step
writer.save()
######################### Generate Jerome schedule###########################################
df= {
'Date':[10232020,10242020,10252020,10262020],
'Class':['French','Math','Physics','History'],
'Period':[3,1,2,4]}
school = pd.DataFrame(df,columns = ['Date','Class','Period'])
school
df2= {
'Date':[10232020,10242020,10252020,10262020],
'Meeting':['MQ1','MQ2','MQ4','MQ5'],
'Lunch':[1,1,1,3],
'code':['javascript','python','R','C++']}
office = pd.DataFrame(df2,columns = ['Date','Meeting','Lunch','code'])
office
df3= {
'cooking':['X','B','D','C'],
'Laundry':['color','white','white','color'],
'cleaning':['patio','garage','living_room','bathroom']}
home = pd.DataFrame(df3,columns = ['cooking','Laundry','cleaning'])
home
import pandas as pd
#initialze the excel writer
writer = pd.ExcelWriter('Jerome_schedule.xlsx', engine='xlsxwriter')
#store your dataframes in a dict, where the key is the sheet name you want
frames = {'home':home, 'office':office,
'school':school}
#now loop thru and put each on a specific sheet
for sheet, frame in frames.items(): # .use .items for python 3.X
frame.to_excel(writer, sheet_name = sheet,index = False)
#critical last step
writer.save()
I want to
concatenate the corresponding sheets/tabs :home, office, and school for Rob_schedule.xlsx,Mike_schedule.xlsx & Jerome_schedule.xlsx
export the concatenated dataframes as family_schedule.xlsx with home, office and school tabs
My attempt:
# This code concatenates all the tabs into one tab, but what I want is to concatenate all by their corresponding sheet/tab names
import pandas as pd
path = os.chdir(r'mypath\\')
files = os.listdir(path)
files
# pull files with `.xlsx` extension
excel_files = [file for file in files if '.xlsx' in file]
excel_files
def create_df_from_excel(file_name):
file = pd.ExcelFile(file_name)
names = file.sheet_names
return pd.concat([file.parse(name) for name in names])
df = pd.concat(
[create_df_from_excel(xl) for xl in excel_files]
)
# save the data frame
writer = pd.ExcelWriter('family_reschedule.xlsx')
df.to_excel(writer, '')
writer.save()
I would iterate over each file, and then over each worksheet, adding each sheet to a different list based on the sheet name.
Then you'll have a structure like...
{
'sheet1': [df_file1_sheet1, df_file2_sheet1, df_file3_sheet1],
'sheet2': [df_file1_sheet2, df_file2_sheet2, df_file3_sheet2],
'sheet3': [df_file1_sheet3, df_file2_sheet3, df_file3_sheet3],
}
Then concatenate each list in to a single dataframe, them write the three dataframes to an excel file.
# This part is just your own code, I've added it here because you
# couldn't figure out where `excel_files` came from
#################################################################
import os
import pandas as pd
path = os.chdir(r'mypath\\')
files = os.listdir(path)
files
# pull files with `.xlsx` extension
excel_files = [file for file in files if '.xlsx' in file]
excel_files
# This part is my actual answer
###############################
from collections import defaultdict
worksheet_lists = defaultdict(list)
for file_name in excel_files:
workbook = pd.ExcelFile(file_name)
for sheet_name in workbook.sheet_names:
worksheet = workbook.parse(sheet_name)
worksheet['source'] = file_name
worksheet_lists[sheet_name].append(worksheet)
worksheets = {
sheet_name: pd.concat(sheet_list)
for (sheet_name, sheet_list)
in worksheet_lists.items()
}
writer = pd.ExcelWriter('family_reschedule.xlsx')
for sheet_name, df in worksheets.items():
df.to_excel(writer, sheet_name=sheet_name, index=False)
writer.save()
Consider building a list of concatenated data frames with list/dict comprehensions by running an outer iteration across sheet names and inner iteration across workbooks:
import pandas as pd
path = "/path/to/workbooks"
workbooks = [f for f in os.listdir(path) if f.endswith(".xlsx")]
sheets = ["home", "office", "school"]
df_dicts = {
sh: pd.concat(
[pd.read_excel(os.path.join(path, wb), sheet_name=sh)
for wb in workbooks]
)
for sh in sheets
}
Then, export to single file:
with pd.ExcelWriter('family_reschedule.xlsx') as writer:
for sh, df in df_dict.items():
df.to_excel(writer, sheet_name=sh, index=False)
writer.save()
I am trying to query based on different criteria, and then create individual tabs in Excel to store the query results.
For example, I want to query all the results that match criteria A, and write the result to an Excel tab named "A". The query result is stored in the panda data frame format.
My problem is, when I want to perform 4 different queries based on criteria "A", "B", "C", "D", the final Excel file only contains one tab, which corresponds to the last criteria in the list. It seems that all the previous tabs are over-written.
Here is sample code where I replace the SQL query part with a pre-set dataframe and the tab name is set to 0, 1, 2, 3 ... instead of the default Sheet1, Sheet2... in Excel.
import pandas as pd
import xlsxwriter
import datetime
def GCF_Refresh(fileCreatePath, inputName):
currentDT = str(datetime.datetime.now())
currentDT = currentDT[0:10]
loadExcelName = currentDT + '_' + inputName + '_Load_File'
fileCreatePath = fileCreatePath +'\\' + loadExcelName+'.xlsx'
wb = xlsxwriter.Workbook(fileCreatePath)
data = [['tom'], ['nick'], ['juli']]
# Create the pandas DataFrame
df = pd.DataFrame(data, columns=['Name'])
writer = pd.ExcelWriter(fileCreatePath, engine='xlsxwriter')
for iCount in range(5):
#worksheet = writer.sheets[str(iCount)]
#worksheet.write(0, 0, 'Name')
df['Name'].to_excel(fileCreatePath, sheet_name=str(iCount), startcol=0, startrow=1, header=None, index=False)
writer.save()
writer.close()
# Change the file path here to store on your local computer
GCF_Refresh("H:\\", "Bulk_Load")
My goal for this sample code is to have 5 tabs named, 0, 1, 2, 3, 4 and each tab has 'tom', 'nick' and 'juli' printed to it. Right now, I just have one tab (named 4), which is the last tab among all the tabs I expected.
There are a number of errors in the code:
The xlsx file is created using XlsxWriter directly and then overwritten by creating it Again in Pandas.
The to_excel() method takes a reference to the writer object not the file path.
The save() and close() are the same thing and shouldn't be in the
loop.
Here is a simplified version of your code with these issues fixes:
import pandas as pd
import xlsxwriter
fileCreatePath = 'test.xlsx'
data = [['tom'], ['nick'], ['juli']]
# Create the pandas DataFrame
df = pd.DataFrame(data, columns=['Name'])
writer = pd.ExcelWriter(fileCreatePath, engine='xlsxwriter')
for iCount in range(5):
df['Name'].to_excel(writer,
sheet_name=str(iCount),
startcol=0,
startrow=1,
header=None,
index=False)
writer.save()
Output:
See Working with Python Pandas and XlsxWriter in the XlsxWriter docs for some details about getting Pandas and XlsxWriter working together.