python读写excel数据--pandas详解

data_in = pd.read_excel('M2FENZISHI.xlsx')

# example
df = pd.DataFrame({'A':[0,1,2]})
writer = pd.ExcelWriter('test.xlsx') #name of excel file
df.to_excel(writer, sheet_name='Sheet1') # write
writer.save()   # save

import numpy as np 
import re 
import pandas as pd
data_in = pd.read_excel('M2FENZISHI.xlsx')['data'] #load data
print(data_in.shape)
length = len(data_in)    # length
pattern = re.compile(r'\d+') # find number
num_out = []
for i in range(length):
    temp = pattern.findall(data_in[i]) # find number
    int_num = list(map(int,temp))
    num_out.append(int_num)
num_out = np.array(num_out)
print(num_out.shape)
# writer data to excel
df = pd.DataFrame({'C': num_out[:, 0], 'H': num_out[:, 1], 'O': num_out[:, 2],
                   'N': num_out[:, 3], 'P': num_out[:, 4], 'S': num_out[:, 5]})
writer = pd.ExcelWriter('test.xlsx') # name of the file
df.to_excel(writer, sheet_name='Sheet1')
writer.save()