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excelexporters.equipmentoutput.generate_excel()   F

Complexity

Conditions 35

Size

Total Lines 330
Code Lines 241

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
eloc 241
dl 0
loc 330
rs 0
c 0
b 0
f 0
cc 35
nop 5

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

Complexity

Complex classes like excelexporters.equipmentoutput.generate_excel() often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

1
import base64
2
import uuid
3
import os
4
from openpyxl.chart import (
5
    PieChart,
6
    LineChart,
7
    BarChart,
8
    Reference,
9
)
10
from openpyxl.styles import PatternFill, Border, Side, Alignment, Font
11
from openpyxl.drawing.image import Image
12
from openpyxl import Workbook
13
from openpyxl.chart.label import DataLabelList
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16
####################################################################################################################
17
# PROCEDURES
18
# Step 1: Validate the report data
19
# Step 2: Generate excel file
20
# Step 3: Encode the excel file bytes to Base64
21
####################################################################################################################
22
23
24 View Code Duplication
def export(report,
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25
           name,
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           reporting_start_datetime_local,
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           reporting_end_datetime_local,
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           period_type):
29
    ####################################################################################################################
30
    # Step 1: Validate the report data
31
    ####################################################################################################################
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    if report is None:
33
        return None
34
    print(report)
35
36
    ####################################################################################################################
37
    # Step 2: Generate excel file from the report data
38
    ####################################################################################################################
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    filename = generate_excel(report,
40
                              name,
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                              reporting_start_datetime_local,
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                              reporting_end_datetime_local,
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                              period_type)
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    ####################################################################################################################
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    # Step 3: Encode the excel file to Base64
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    ####################################################################################################################
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    try:
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        with open(filename, 'rb') as binary_file:
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            binary_file_data = binary_file.read()
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    except IOError as ex:
51
        pass
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    # Base64 encode the bytes
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    base64_encoded_data = base64.b64encode(binary_file_data)
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55
    # get the Base64 encoded data using human-readable characters.
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    base64_message = base64_encoded_data.decode('utf-8')
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    # delete the file from server
58
    try:
59
        os.remove(filename)
60
    except NotImplementedError as ex:
61
        pass
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    return base64_message
63
64
65
def generate_excel(report,
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                   name,
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                   reporting_start_datetime_local,
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                   reporting_end_datetime_local,
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                   period_type):
70
    wb = Workbook()
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    ws = wb.active
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    # Row height
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    ws.row_dimensions[1].height = 102
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    for i in range(2, 2000 + 1):
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        ws.row_dimensions[i].height = 42
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    # Col width
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    ws.column_dimensions['A'].width = 1.5
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    ws.column_dimensions['B'].width = 25.0
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    for i in range(ord('C'), ord('L')):
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        ws.column_dimensions[chr(i)].width = 15.0
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    # Font
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    name_font = Font(name='Constantia', size=15, bold=True)
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    title_font = Font(name='宋体', size=15, bold=True)
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    data_font = Font(name='Franklin Gothic Book', size=11)
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    table_fill = PatternFill(fill_type='solid', fgColor='1F497D')
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    f_border = Border(left=Side(border_style='medium', color='00000000'),
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                      right=Side(border_style='medium', color='00000000'),
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                      bottom=Side(border_style='medium', color='00000000'),
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                      top=Side(border_style='medium', color='00000000')
96
                      )
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    b_border = Border(
98
        bottom=Side(border_style='medium', color='00000000'),
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    )
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    b_c_alignment = Alignment(vertical='bottom',
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                              horizontal='center',
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                              text_rotation=0,
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                              wrap_text=True,
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                              shrink_to_fit=False,
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                              indent=0)
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    c_c_alignment = Alignment(vertical='center',
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                              horizontal='center',
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                              text_rotation=0,
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                              wrap_text=True,
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                              shrink_to_fit=False,
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                              indent=0)
113
    b_r_alignment = Alignment(vertical='bottom',
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                              horizontal='right',
115
                              text_rotation=0,
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                              wrap_text=True,
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                              shrink_to_fit=False,
118
                              indent=0)
119
    c_r_alignment = Alignment(vertical='bottom',
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                              horizontal='center',
121
                              text_rotation=0,
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                              wrap_text=True,
123
                              shrink_to_fit=False,
124
                              indent=0)
125
    # Img
126
    img = Image("excelexporters/myems.png")
127
    img.width = img.width * 0.85
128
    img.height = img.height * 0.85
129
    # img = Image("myems.png")
130
    ws.add_image(img, 'B1')
131
132
    # Title
133
    ws.row_dimensions[3].height = 60
134
135
    ws['B3'].font = name_font
136
    ws['B3'].alignment = b_r_alignment
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    ws['B3'] = 'Name:'
138
    ws['C3'].border = b_border
139
    ws['C3'].alignment = b_c_alignment
140
    ws['C3'].font = name_font
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    ws['C3'] = name
142
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    ws['D3'].font = name_font
144
    ws['D3'].alignment = b_r_alignment
145
    ws['D3'] = 'Period:'
146
    ws['E3'].border = b_border
147
    ws['E3'].alignment = b_c_alignment
148
    ws['E3'].font = name_font
149
    ws['E3'] = period_type
150
151
    ws['F3'].font = name_font
152
    ws['F3'].alignment = b_r_alignment
153
    ws['F3'] = 'Date:'
154
    ws['G3'].border = b_border
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    ws['G3'].alignment = b_c_alignment
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    ws['G3'].font = name_font
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    ws['G3'] = reporting_start_datetime_local + "__" + reporting_end_datetime_local
158
    ws.merge_cells("G3:H3")
159
160
    if "reporting_period" not in report.keys() or \
161
            "names" not in report['reporting_period'].keys() or len(report['reporting_period']['names']) == 0:
162
        filename = str(uuid.uuid4()) + '.xlsx'
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        wb.save(filename)
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        return filename
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    ##################################
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    current_row_number = 6
170
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    reporting_period_data = report['reporting_period']
172
173
    has_names_data_flag = True
174
175
    if "names" not in reporting_period_data.keys() or \
176
            reporting_period_data['names'] is None or \
177
            len(reporting_period_data['names']) == 0:
178
        has_names_data_flag = False
179
180
    if has_names_data_flag:
181
        ws['B' + str(current_row_number)].font = title_font
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        ws['B' + str(current_row_number)] = name + ' 报告期产出'
183
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        current_row_number += 1
185
186
        category = reporting_period_data['names']
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        ca_len = len(category)
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189
        ws.row_dimensions[current_row_number].height = 60
190
        ws['B' + str(current_row_number)].fill = table_fill
191
        ws['B' + str(current_row_number)].border = f_border
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        col = 'C'
194
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        for i in range(0, ca_len):
196
            ws[col + str(current_row_number)].fill = table_fill
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            ws[col + str(current_row_number)].font = name_font
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            ws[col + str(current_row_number)].alignment = c_c_alignment
199
            ws[col + str(current_row_number)].border = f_border
200
            ws[col + str(current_row_number)] = \
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                reporting_period_data['names'][i] + " (" + reporting_period_data['units'][i] + ")"
202
203
            col = chr(ord(col) + 1)
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205
        current_row_number += 1
206
207
        ws['B' + str(current_row_number)].font = title_font
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        ws['B' + str(current_row_number)].alignment = c_c_alignment
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        ws['B' + str(current_row_number)].border = f_border
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        ws['B' + str(current_row_number)] = '产出'
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        col = 'C'
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        for i in range(0, ca_len):
215
            ws[col + str(current_row_number)].font = name_font
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            ws[col + str(current_row_number)].alignment = c_c_alignment
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            ws[col + str(current_row_number)].border = f_border
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            ws[col + str(current_row_number)] = round(reporting_period_data['subtotals'][i], 2)
219
220
            col = chr(ord(col) + 1)
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        current_row_number += 1
223
224
        # ws['B' + str(current_row_number)].font = title_font
225
        # ws['B' + str(current_row_number)].alignment = c_c_alignment
226
        # ws['B' + str(current_row_number)].border = f_border
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        # ws['B' + str(current_row_number)] = '单位面积值'
228
        #
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        # col = 'C'
230
        #
231
        # for i in range(0, ca_len):
232
        #     ws[col + str(current_row_number)].font = name_font
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        #     ws[col + str(current_row_number)].alignment = c_c_alignment
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        #     ws[col + str(current_row_number)].border = f_border
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        #     ws[col + str(current_row_number)] = round(reporting_period_data['subtotals_per_unit_area'][i], 2)
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        #
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        #     col = chr(ord(col) + 1)
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        #
239
        # current_row_number += 1
240
241
        ws['B' + str(current_row_number)].font = title_font
242
        ws['B' + str(current_row_number)].alignment = c_c_alignment
243
        ws['B' + str(current_row_number)].border = f_border
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        ws['B' + str(current_row_number)] = '环比'
245
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        col = 'C'
247
248
        for i in range(0, ca_len):
249
            ws[col + str(current_row_number)].font = name_font
250
            ws[col + str(current_row_number)].alignment = c_c_alignment
251
            ws[col + str(current_row_number)].border = f_border
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            ws[col + str(current_row_number)] = str(
253
                round(reporting_period_data['increment_rates'][i] * 100, 2)) + '%' \
254
                if reporting_period_data['increment_rates'][i] is not None else '-'
255
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            col = chr(ord(col) + 1)
257
258
        current_row_number += 2
259
260
        ####################################
261
262
        has_values_data = True
263
        has_timestamps_data = True
264
265
        if 'values' not in reporting_period_data.keys() or \
266
                reporting_period_data['values'] is None or \
267
                len(reporting_period_data['values']) == 0:
268
            has_values_data = False
269
270
        if 'timestamps' not in reporting_period_data.keys() or \
271
                reporting_period_data['timestamps'] is None or \
272
                len(reporting_period_data['timestamps']) == 0 or \
273
                len(reporting_period_data['timestamps'][0]) == 0:
274
            has_timestamps_data = False
275
276
        if has_values_data and has_timestamps_data:
277
            ca_len = len(reporting_period_data['names'])
278
            time = reporting_period_data['timestamps'][0]
279
280
            ws['B' + str(current_row_number)].font = title_font
281
            ws['B' + str(current_row_number)] = name + ' 详细数据'
282
283
            current_row_number += 1
284
285
            chart_start_row_number = current_row_number
286
287
            current_row_number += ca_len * 6
288
            table_start_row_number = current_row_number
289
290
            ws.row_dimensions[current_row_number].height = 60
291
            ws['B' + str(current_row_number)].fill = table_fill
292
            ws['B' + str(current_row_number)].font = title_font
293
            ws['B' + str(current_row_number)].alignment = c_c_alignment
294
            ws['B' + str(current_row_number)].border = f_border
295
            ws['B' + str(current_row_number)] = '日期时间'
296
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            col = 'C'
298
299
            for i in range(0, ca_len):
300
                ws[col + str(current_row_number)].fill = table_fill
301
                ws[col + str(current_row_number)].font = title_font
302
                ws[col + str(current_row_number)].alignment = c_c_alignment
303
                ws[col + str(current_row_number)].border = f_border
304
                ws[col + str(current_row_number)] = \
305
                    reporting_period_data['names'][i] + " (" + reporting_period_data['units'][i] + ")"
306
                col = chr(ord(col) + 1)
307
308
            current_row_number += 1
309
310
            for i in range(0, len(time)):
311
                ws['B' + str(current_row_number)].font = title_font
312
                ws['B' + str(current_row_number)].alignment = c_c_alignment
313
                ws['B' + str(current_row_number)].border = f_border
314
                ws['B' + str(current_row_number)] = time[i]
315
316
                col = 'C'
317
                for j in range(0, ca_len):
318
                    ws[col + str(current_row_number)].font = title_font
319
                    ws[col + str(current_row_number)].alignment = c_c_alignment
320
                    ws[col + str(current_row_number)].border = f_border
321
                    ws[col + str(current_row_number)] = round(reporting_period_data['values'][j][i], 2) \
322
                        if reporting_period_data['values'][j][i] is not None else 0.00
323
                    col = chr(ord(col) + 1)
324
325
                current_row_number += 1
326
327
            table_end_row_number = current_row_number - 1
328
329
            ws['B' + str(current_row_number)].font = title_font
330
            ws['B' + str(current_row_number)].alignment = c_c_alignment
331
            ws['B' + str(current_row_number)].border = f_border
332
            ws['B' + str(current_row_number)] = '小计'
333
334
            col = 'C'
335
336
            for i in range(0, ca_len):
337
                ws[col + str(current_row_number)].font = title_font
338
                ws[col + str(current_row_number)].alignment = c_c_alignment
339
                ws[col + str(current_row_number)].border = f_border
340
                ws[col + str(current_row_number)] = round(reporting_period_data['subtotals'][i], 2)
341
                col = chr(ord(col) + 1)
342
343
            current_row_number += 2
344
345
            format_time_width_number = 1.0
346
            min_len_number = 1.0
347
            min_width_number = 11.0  # format_time_width_number * min_len_number + 4 and min_width_number > 11.0
348
349
            if period_type == 'hourly':
350
                format_time_width_number = 4.0
351
                min_len_number = 2
352
                min_width_number = 12.0
353
            elif period_type == 'daily':
354
                format_time_width_number = 2.5
355
                min_len_number = 4
356
                min_width_number = 14.0
357
            elif period_type == 'monthly':
358
                format_time_width_number = 2.1
359
                min_len_number = 4
360
                min_width_number = 12.4
361
            elif period_type == 'yearly':
362
                format_time_width_number = 1.5
363
                min_len_number = 5
364
                min_width_number = 11.5
365
366
            for i in range(0, ca_len):
367
                line = LineChart()
368
                line.title = '报告期产出 - ' + \
369
                             reporting_period_data['names'][i] + " (" + reporting_period_data['units'][i] + ")"
370
                labels = Reference(ws, min_col=2, min_row=table_start_row_number + 1, max_row=table_end_row_number)
371
                line_data = Reference(ws, min_col=3 + i, min_row=table_start_row_number, max_row=table_end_row_number)
372
                line.add_data(line_data, titles_from_data=True)
373
                line.set_categories(labels)
374
                line_data = line.series[0]
375
                line_data.marker.symbol = "circle"
376
                line_data.smooth = True
377
                line.x_axis.crosses = 'min'
378
                line.height = 8.25
379
                line.width = format_time_width_number * len(time) if len(time) > min_len_number else min_width_number
380
                if line.width > 24:
381
                    line.width = 24
382
                line.dLbls = DataLabelList()
383
                line.dLbls.dLblPos = 't'
384
                line.dLbls.showVal = True
385
                line.dLbls.showPercent = False
386
                chart_col = 'B'
387
                chart_cell = chart_col + str(chart_start_row_number)
388
                chart_start_row_number += 6
389
                ws.add_chart(line, chart_cell)
390
391
    filename = str(uuid.uuid4()) + '.xlsx'
392
    wb.save(filename)
393
394
    return filename
395
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397