我正在编写一个Python程序来为我的大学生成考勤报告，这是我到目前为止所做的：
--> Load the input workbook
--> Do some manipulation to it and save it as 'Output.xlsx'
--> Read the 'Output.xlsx' for next iteration ###Here the problem occurs
--> Do some more manipulation based on input workbook and Output.xlsx
--> Save it as 'TIMESTAMP HERE.xlsx'
当OpenPyxl保存＆＃39; Output.xlsx＆＃39;时，它似乎压缩了它，当我在MS Excel中打开它时，似乎解压缩并重新应用所有格式。所以，当我打开输出.xxx＆＃39;对于第二次迭代，需要永远加载。我尝试使用：
output = openpyxl.load_workbook('Output.xlsx',use_iterators = True)
然后加载速度非常快，但我不能再写了。
有没有办法像use_iterables param那样快速加载工作簿？
有没有替代方法呢？
如果你需要看一下我的代码：
import openpyxl,datetime
workbookname = raw_input('Enter the workbook name: ')
outputsheetname = workbookname
workbook = openpyxl.load_workbook(workbookname)
allsheets = workbook.get_sheet_names()
print(allsheets)
weeklysheetname = [x for x in allsheets if 'WEEKLY' in x]
for sheetname in allsheets:
if not sheetname.startswith('I'):
sheet = workbook.get_sheet_by_name(sheetname)
count = 0
markedupto = 0
highestdatarow = sheet.get_highest_row()
if 'WEEKLY' in sheetname:
break
if '-' not in sheetname:
for each in sheet.iter_rows('D7:CD7'):
for cell in each:
if(cell.value != None):
markedupto += 1
else:
for each in sheet.iter_rows('D7:W7'):
for cell in each:
if(cell.value != None):
markedupto += 1
print markedupto
if '-' not in sheetname:
for each in range(10,highestdatarow):
for each in sheet.iter_rows('D'+str(each)+':CD'+str(each)):
for cell in each:
if cell.value not in ['a','A']:
cell.value = None
else:
for each in range(10,highestdatarow):
for each in sheet.iter_rows('D'+str(each)+':W'+str(each)):
for cell in each:
if cell.value not in ['a','A']:
cell.value = None
for each in range(10,highestdatarow):
print('at highest row')
curmarked = 1
numcells = 0
for each in sheet.iter_rows('D'+str(each)+':CD'+str(each)):
for cell in each:
if(cell.value == None):
cell.value = curmarked
curmarked+= 1
numcells += 1
if(cell.value in ['a','A']):
numcells += 1
if(numcells == markedupto):
break
if '-' not in sheetname:
sheet['CE9'] = markedupto
else:
sheet['X9'] = 3*markedupto
print('saving')
workbook.save('Output.xlsx')
print('saved')
sheet = workbook.get_sheet_by_name(weeklysheetname[0])
fromDate = sheet.cell('F5').value
print('fromDate: ',fromDate)
toDate = sheet.cell('H5').value
print('toDate: ',toDate)
output = openpyxl.load_workbook('Output.xlsx')
print('loaded')
sheets = [x for x in output.get_sheet_names() if not (x.startswith('I') or x.endswith('I'))]
print(sheets)
def generate_in_weekly(sheetname):
subdata = []
sheet = output.get_sheet_by_name(sheetname)
number_of_periods = 0
for each in sheet.iter_rows('D8:CD8'):
for cell in each:
if cell.value != None:
number_of_periods += 1
else:
break
print('Number of periods: ' + str(number_of_periods))
start_column = 'D8'
end_column = chr(ord('D') + number_of_periods -1) + '8'
print('end column' ,end_column)
print(toDate,fromDate)
start_cell = ''
end_cell = ''
for each in sheet.iter_rows(start_column+':'+end_column):
for cell in each:
if(cell.value == fromDate):
start_cell = cell.column+str(cell.row)
for each in list(sheet.iter_rows(start_column+':'+end_column))[::-1]:
for cell in each:
if(cell.value == toDate):
end_cell = cell.column+str(cell.row)
print(fromDate,toDate)
print(start_cell,end_cell)
total_val = len(list(sheet.iter_rows(start_cell+':'+end_cell))[0])
print(total_val)
start_row = 10
end_row = sheet.get_highest_row()
start_col_alpha = start_cell[0:-1]
end_col_alpha = end_cell[0:-1]
print(start_col_alpha,end_col_alpha)
final_values = []
for student in sheet.iter_rows(start_col_alpha+str(start_row) +':' + end_col_alpha+str(end_row-1)):
student_vals = []
for period in student:
if isinstance(period.value,int):
student_vals.append(period.value)
print('student_values:',student_vals)
if student_vals !=[]:
final_values.append(max(student_vals) - min(student_vals) + 1)
else:
final_values.append(0)
weeklysheet = output.get_sheet_by_name(weeklysheetname[0])
cur_sub_column_alpha = ''
for each in weeklysheet.iter_rows('E7:O7'):
for cell in each:
print('sheetname: ',sheetname,'cell: ',cell.value)
if(cell.value == sheetname):
print(cell.value)
cur_sub_column_alpha = cell.column
break
start_row = 9
print(cur_sub_column_alpha)
print("Num students: " + str(len(final_values)))
print(cur_sub_column_alpha+str(start_row) +':' + cur_sub_column_alpha+str(end_row-1))
for each in weeklysheet.iter_rows(cur_sub_column_alpha+str(start_row) +':' + cur_sub_column_alpha+str(end_row-1)):
for cell in each:
if not str(cell.column+str(cell.row)).endswith('38'):
cell.value = final_values.pop(0)
weeklysheet[cur_sub_column_alpha+'8'] = total_val
def generate_for_split_labs(sheetname):
subdata = []
sheet = output.get_sheet_by_name(sheetname)
number_of_periods = 0
for each in sheet.iter_rows('D8:CD8'):
for cell in each:
if cell.value != None:
number_of_periods += 1
else:
break
print('Number of periods: ' + str(number_of_periods))
start_column = 'D8'
end_column = chr(ord('D') + number_of_periods -1) + '8'
print(end_column)
print(toDate,fromDate)
start_cell = ''
end_cell = ''
for each in sheet.iter_rows(start_column+':'+end_column):
for cell in each:
if(cell.value == fromDate):
start_cell = str(cell).split('.')[-1].strip('>')
for each in list(sheet.iter_rows(start_column+':'+end_column))[::-1]:
for cell in each:
print(cell.value)
if(cell.value == toDate):
end_cell = str(cell).split('.')[-1].strip('>')
print(fromDate,toDate)
print(start_cell,end_cell)
total_val = len(list(sheet.iter_rows(start_cell+':'+end_cell))[0])
print(total_val)
start_row = 10
end_row = sheet.get_highest_row()
start_col_alpha = start_cell[0:-1]
end_col_alpha = end_cell[0:-1]
print(start_col_alpha,end_col_alpha)
final_values = []
for student in sheet.iter_rows(start_col_alpha+str(start_row) +':' + end_col_alpha+str(end_row-1)):
student_vals = []
for period in student:
if isinstance(period.value,int):
student_vals.append(period.value)
print('student_values:',student_vals)
if student_vals !=[]:
final_values.append(max(student_vals) - min(student_vals) + 1)
else:
final_values.append(0)
final_values = [3*x for x in final_values]
print('Final Values:' ,final_values)
weeklysheet = output.get_sheet_by_name(weeklysheetname[0])
cur_sub_cell = ''
cut_at_hyphen = sheetname.split('-')
sheetname = cut_at_hyphen[0]
reminant = cut_at_hyphen[1]
for each in weeklysheet.iter_rows('E7:O7'):
for cell in each:
if(cell.value == sheetname):
cur_sub_cell = str(cell).split('.')[-1].rstrip('>')
break
print(cur_sub_cell)
cur_sub_column_alpha = cur_sub_cell[0:-1]
if reminant == 'I':
start_row = 9
print(start_row,end_row)
print("Num students: " + str(len(final_values)))
end_row = len(final_values)+start_row-1
print(start_row,end_row)
for each in weeklysheet.iter_rows(cur_sub_column_alpha+str(start_row) +':' + cur_sub_column_alpha+str(end_row)):
for cell in each:
if str(cell).split('.')[-1].rstrip('>')[1:] != '38':
cell.value = final_values.pop(0)
weeklysheet[cur_sub_column_alpha+'8'] = total_val*3
elif reminant == 'II':
start_row = 39
print("Num students: " + str(len(final_values)))
print(start_row,end_row)
end_row = len(final_values)+start_row-1
print(start_row,end_row)
for each in weeklysheet.iter_rows(cur_sub_column_alpha+str(start_row) +':' + cur_sub_column_alpha+str(end_row)):
for cell in each:
print(cell)
if str(cell).split('.')[-1].rstrip('>')[1:] != '38':
cell.value = final_values.pop(0)
weeklysheet[cur_sub_column_alpha+str(start_row-1)] = total_val*3
for each in sheets:
generate_in_weekly(each)
generate_for_split_labs('13A99304-I')
generate_for_split_labs('13A99304-II')
generate_for_split_labs('13A05303-I')
generate_for_split_labs('13A05303-II')
output.save(outputsheetname[:-5]+' '+str(datetime.datetime.now())[0:18].replace(':','-') +'.xlsx')