python实现excel公式格式化的示例代码
之前跟一些小伙伴有个讨论:
大概就是很多跟数据打交道的朋友都面对过很复杂的excel公式,有时嵌套层数特别多,肉眼观看很容易蒙圈。
有了这样的需求,我就有了解决问题的想法,说干就干,于是一个比较牛逼的excel公式格式化的工具就出现了。
效果体验
先看看效果吧:
=IF(C11>100%*C4,IF(C11<=200%*C4,C11*50%-C4*15%,C11*60%-C4*35%),IF(C11<=C4*50%,C11*30%,C11*40%-C4*5%))
的格式化结果是:
=IF(
C11>100%*C4,
IF(
C11<=200%*C4,
C11*50%-C4*15%,
C11*60%-C4*35%
),
IF(
C11<=C4*50%,
C11*30%,
C11*40%-C4*5%
)
)
(SMA(MAX(CLOSE-DELAY(CLOSE,1),0),12,1)/SMA(ABS(CLOSE-DELAY(CLOSE,1)),12,1)*100-MIN(SMA(MAX(CLOSE-DELAY(
CLOSE,1),0),12,1)/SMA(ABS(CLOSE-DELAY(CLOSE,1)),12,1)*100,12))/(MAX(SMA(MAX(CLOSE-DELAY(CLOSE,1),0),12,
1)/SMA(ABS(CLOSE-DELAY(CLOSE,1)),12,1)*100,12)-MIN(SMA(MAX(CLOSE-DELAY(CLOSE,1),0),12,1)/SMA(ABS(
CLOSE-DELAY(CLOSE,1)),12,1)*100,12))
的格式化结果为:
(
SMA(MAX(CLOSE-DELAY(CLOSE,1),0),12,1)
/
SMA(ABS(CLOSE-DELAY(CLOSE,1)),12,1)
*
100-MIN(
SMA(MAX(CLOSE-DELAY(CLOSE,1),0),12,1)
/
SMA(ABS(CLOSE-DELAY(CLOSE,1)),12,1)*100,
12
)
)
/
(
MAX(
SMA(MAX(CLOSE-DELAY(CLOSE,1),0),12,1)
/
SMA(ABS(CLOSE-DELAY(CLOSE,1)),12,1)*100,
12
)
-
MIN(
SMA(MAX(CLOSE-DELAY(CLOSE,1),0),12,1)
/
SMA(ABS(CLOSE-DELAY(CLOSE,1)),12,1)*100,
12
)
)
=IF(ROW()>COLUMN(),"",IF(ROW()=COLUMN(),$B15,ROUNDDOWN($B15*INDIRECT(SUBSTITUTE(ADDRESS(1,3+COLUMN()-ROW(),
4),1,"")&56),0)))
的格式化结果为:
=IF(
ROW()>COLUMN(),
"",
IF(
ROW()=COLUMN(),
$B15,
ROUNDDOWN(
$B15*INDIRECT(
SUBSTITUTE(ADDRESS(1,3+COLUMN()-ROW(), 4),1,"")
&
56
),
0
)
)
)
(文末有体验网址)
不过接下来,将公布这套格式化程序的完整代码和开发思想,有技术能力的小伙伴可以考虑改进该代码。
完整代码
__author__ = 'xiaoxiaoming'
from collections import deque
import re
class Node:
def __init__(self, parent=None, tab_size=0):
self.parent = parent
self.tab_size = tab_size
self.data = []
def is_single_node(self):
for e in self.data:
if not isinstance(e, str):
return False
return True
def get_single_text(self):
return "".join(self.data)
def split_text_blocks(excel_func_text):
"""
将excel公式字符串,按照一定的规则切割成数组
:param excel_func_text: 被切割的excel公式字符串
:return: 切割后的结果
"""
excel_func_text = excel_func_text.replace('\n', '').replace('\r', '')
excel_func_text = re.sub(" +", " ", excel_func_text)
lines = []
i, j = 0, 0
while j < len(excel_func_text):
c = excel_func_text[j]
if (c == '(' and excel_func_text[j + 1] != ')') or c == ',':
lines.append(excel_func_text[i:j + 1])
i = j = j + 1
elif c == ')' and excel_func_text[j - 1] != '(':
if i < j:
lines.append(excel_func_text[i:j])
i = j # 起始文件块置于)处
# 以下代码查找,如果中间不包含(或),则将)和,之间的文本块加入到划分结果
k = excel_func_text.find(",", j + 1)
l = excel_func_text.find("(", j + 1, k)
m = excel_func_text.find(")", j + 1, k)
if k != -1 and l == -1 and m == -1:
lines.append(excel_func_text[i:k + 1])
i = j = k + 1
elif j + 1 < len(excel_func_text) and excel_func_text[j + 1] != ')':
lines.append(")")
lines.append(excel_func_text[j + 1])
i = j = j + 2
else:
lines.append(")")
i = j = j + 1
elif c == '"':
j = excel_func_text.find('"', j + 1) + 1
else:
j += 1
return lines
blank_char_count = 2
def combine_node(root, text_max_length=60, max_combine_layer=3):
"""
合并最内层的只有纯文本子节点的节点为单个文本节点
:param root: 被合并的节点
:param text_max_length: 合并后的文本长度不超过该参数,则应用该合并替换原节点
:param max_combine_layer: 最大合并层数
:return:
"""
for _ in range(max_combine_layer):
no_change = True
stack = deque([root])
while stack:
node = stack.pop()
tmp = {}
for i, e in enumerate(node.data):
if isinstance(e, Node):
if e.is_single_node():
single_text = e.get_single_text()
if len(single_text) < text_max_length:
tmp[i] = single_text
else:
stack.append(e)
for i, e in tmp.items():
node.data[i] = e
if len(tmp) != 0:
no_change = False
if no_change:
break
def node_next_line(node):
for i, e in enumerate(node.data):
if isinstance(e, str):
if i == 0 or i == len(node.data) - 1:
tab = node.tab_size - 1
else:
tab = node.tab_size
yield f"{' ' * blank_char_count * tab}{e}"
else:
yield from node_next_line(e)
def excel_func_format(excel_func_text, blank_count=2, combine_single_node=True, text_max_length=60,
max_combine_layer=3):
"""
将excel公式格式化成比较容易阅读的格式
:param excel_func_text: 被格式化的excel公式字符串
:param blank_count: 最终显示的格式化字符串的1个tab用几个空格表示
:param combine_single_node: 是否合并纯文本节点,该参数设置为True后面的参数才生效
:param text_max_length: 合并后的文本长度不超过该参数,则应用该合并替换原节点
:param max_combine_layer: 最大合并层数
:return: 格式化后的字符串
"""
global blank_char_count
blank_char_count = blank_count
blocks = split_text_blocks(excel_func_text)
# print("\n".join(blocks))
# print('-----------拆分结果-----------')
tab_size = 0
node = root = Node()
for block in blocks:
if block.endswith("("):
tab_size += 1
child_node = Node(node, tab_size)
node.data.append(child_node)
node = child_node
node.data.append(block)
elif block.startswith(")"):
tab_size -= 1
node.data.append(block)
node = node.parent
else:
node.data.append(block)
if combine_single_node:
combine_node(root, text_max_length, max_combine_layer)
result = [line for line in node_next_line(root)]
return "\n".join(result)
处理流程浅析
下面都以如下公式作为示例:
=IF(ROW()>COLUMN(),"",IF(ROW()=COLUMN(),$B15,ROUNDDOWN($B15*INDIRECT(SUBSTITUTE(ADDRESS(1,3+COLUMN()-ROW(),
4),1,"")&56),0)))
文本分块切分
def split_text_blocks(excel_func_text):
"""
将excel公式字符串,按照一定的规则切割成数组
:param excel_func_text: 被切割的excel公式字符串
:return: 切割后的结果
"""
excel_func_text = excel_func_text.replace('\n', '').replace('\r', '')
excel_func_text = re.sub(" +", " ", excel_func_text)
lines = []
i, j = 0, 0
while j < len(excel_func_text):
c = excel_func_text[j]
if (c == '(' and excel_func_text[j + 1] != ')') or c == ',':
lines.append(excel_func_text[i:j + 1])
i = j = j + 1
elif c == ')' and excel_func_text[j - 1] != '(':
if i < j:
lines.append(excel_func_text[i:j])
i = j # 起始文件块置于)处
# 以下代码查找,如果中间不包含(或),则将)和,之间的文本块加入到划分结果
k = excel_func_text.find(",", j + 1)
l = excel_func_text.find("(", j + 1, k)
m = excel_func_text.find(")", j + 1, k)
if k != -1 and l == -1 and m == -1:
lines.append(excel_func_text[i:k + 1])
i = j = k + 1
elif j + 1 < len(excel_func_text) and excel_func_text[j + 1] != ')':
lines.append(")")
lines.append(excel_func_text[j + 1])
i = j = j + 2
else:
lines.append(")")
i = j = j + 1
elif c == '"':
j = excel_func_text.find('"', j + 1) + 1
else:
j += 1
return lines
s = """=IF(ROW()>COLUMN(),"",IF(ROW()=COLUMN(),$B15,ROUNDDOWN($B15*INDIRECT(SUBSTITUTE(ADDRESS(1,3+COLUMN()-ROW(),
4),1,"")&56),0))) """
blocks = split_text_blocks(s)
for block in blocks:
print(block)
的运行结果为:
=IF(
ROW()>COLUMN(),
"",
IF(
ROW()=COLUMN(),
$B15,
ROUNDDOWN(
$B15*INDIRECT(
SUBSTITUTE(
ADDRESS(
1,
3+COLUMN()-ROW(),
4
),
1,
""
)
&
56
),
0
)
)
)
这端代码首先替换掉所有的换行符,将多个空格替换为单个空格,然后将左右括号和逗号作为切分点进行切分。
但存在一些特殊情况,例如ROW()和COLUMN()括号内部没有任何内容,所有这种括号应该作为普通字符处理,另外被""包含的字符串可能包含括号,也应该作为普通字符。
构建多叉树层次结构
设计数据结构:
class Node:
def __init__(self, parent=None, tab_size=0):
self.parent = parent
self.tab_size = tab_size
self.data = []
parent存储父节点的指针,tab_size存储当前节点的层级,data存储当前节点的所有数据。
构建代码:
tab_size = 0
node = root = Node()
for block in blocks:
if block.endswith("("):
tab_size += 1
child_node = Node(node, tab_size)
node.data.append(child_node)
node = child_node
node.data.append(block)
elif block.startswith(")"):
tab_size -= 1
node.data.append(block)
node = node.parent
else:
node.data.append(block)
构建完毕后,这段数据在内存中的结构(仅展示data)如下:
遍历打印这颗多叉树
def node_next_line(node):
for i, e in enumerate(node.data):
if isinstance(e, str):
if i == 0 or i == len(node.data) - 1:
tab = node.tab_size - 1
else:
tab = node.tab_size
yield f"{' ' * 2 * tab}{e}"
else:
yield from node_next_line(e)
result = [line for line in node_next_line(root)]
print("\n".join(result))
结果:
=IF(
ROW()>COLUMN(),
"",
IF(
ROW()=COLUMN(),
$B15,
ROUNDDOWN(
$B15*INDIRECT(
SUBSTITUTE(
ADDRESS(
1,
3+COLUMN()-ROW(),
4
),
1,
""
)
&
56
),
0
)
)
)
合并最内层的节点
显然将最内层的node5节点合并一下阅读性更好:
首先给数据结构增加判断是否为纯文本节点的方法:
class Node:
def __init__(self, parent=None, tab_size=0):
self.parent = parent
self.tab_size = tab_size
self.data = []
def is_single_node(self):
for e in self.data:
if not isinstance(e, str):
return False
return True
def get_single_text(self):
return "".join(self.data)
下面是合并纯文本节点的实现,max_combine_layer决定了合并的最大次数,如果合并后长度超过text_max_length参数,则不应用这次合并:
from collections import deque
def combine_node(root, text_max_length=60, max_combine_layer=3):
"""
合并最内层的只有纯文本子节点的节点为单个文本节点
:param root: 被合并的节点
:param text_max_length: 合并后的文本长度不超过该参数,则应用该合并替换原节点
:param max_combine_layer: 最大合并层数
:return:
"""
for _ in range(max_combine_layer):
no_change = True
stack = deque([root])
while stack:
node = stack.pop()
tmp = {}
for i, e in enumerate(node.data):
if isinstance(e, Node):
if e.is_single_node():
single_text = e.get_single_text()
if len(single_text) < text_max_length:
tmp[i] = single_text
else:
stack.append(e)
for i, e in tmp.items():
node.data[i] = e
if len(tmp) != 0:
no_change = False
if no_change:
break
合并一次:
combine_node(root, 100, 1)
result = [line for line in node_next_line(root)]
print("\n".join(result))
结果:
=IF(
ROW()>COLUMN(),
"",
IF(
ROW()=COLUMN(),
$B15,
ROUNDDOWN(
$B15*INDIRECT(
SUBSTITUTE(
ADDRESS(1,3+COLUMN()-ROW(), 4),
1,
""
)
&
56
),
0
)
)
)
合并二次:
combine_node(root, 100, 2)
result = [line for line in node_next_line(root)]
print("\n".join(result))
结果:
=IF(
ROW()>COLUMN(),
"",
IF(
ROW()=COLUMN(),
$B15,
ROUNDDOWN(
$B15*INDIRECT(
SUBSTITUTE(ADDRESS(1,3+COLUMN()-ROW(), 4),1,"")
&
56
),
0
)
)
)
合并三次:
combine_node(root, 100, 3)
result = [line for line in node_next_line(root)]
print("\n".join(result))
结果:
=IF(
ROW()>COLUMN(),
"",
IF(
ROW()=COLUMN(),
$B15,
ROUNDDOWN(
$B15*INDIRECT(SUBSTITUTE(ADDRESS(1,3+COLUMN()-ROW(), 4),1,"")&56),
0
)
)
)
合并三次后的内存情况:
体验网址
http://xiaoxiaoming.xyz:8088/excel
不保证永久有效。
到此这篇关于python实现excel公式格式化的示例代码的文章就介绍到这了,更多相关python excel公式格式化内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持!
以上是 python实现excel公式格式化的示例代码 的全部内容, 来源链接: utcz.com/z/341554.html