Ane*_*way 5 python arrays dictionary python-3.x
对于某些背景，我正在尝试创建一个使用 Python 3.5 将工作表转换为 API 调用的工具
为了将表格单元格转换为 API 调用所需的模式，我已经开始对电子表格中使用的标题使用类似 javascript 的语法。例如：
工作表标题（字符串）
dict.list[0].id
Python字典
{
"dict":
"list": [
{"id": "my cell value"}
]
}
标头架构也可能具有嵌套的数组/字典：
one.two[0].three[0].four.five[0].six
而且我还需要在创建对象后附加到对象，因为我浏览每个标题。
基于/sf/answers/3309354331/，我可以使用类似的值设置嵌套字典，one.two.three.four并且我可以在浏览行时附加到现有字典，但我一直无法添加对数组的支持：
def add_branch(tree, vector, value):
key = vector[0]
tree[key] = value \
if len(vector) == 1 \
else add_branch(tree[key] if key in tree else {},
vector[1:],
value)
return tree
file = Worksheet(filePath, sheet).readRow()
rowList = []
for row in file:
rowObj = {}
for colName, rowValue in row.items():
rowObj.update(add_branch(rowObj, colName.split("."), rowValue))
rowList.append(rowObj)
return rowList
import re, json
def branch(tree, vector, value):
"""
Used to convert JS style notation (e.g dict.another.array[0].id) to a python object
Originally based on /sf/answers/3309354331/
"""
# Convert Boolean
if isinstance(value, str):
value = value.strip()
if value.lower() in ['true', 'false']:
value = True if value.lower() == "true" else False
# Convert JSON
try:
value = json.loads(value)
except:
pass
key = vector[0]
arr = re.search('\[([0-9]+)\]', key)
if arr:
arr = arr.group(0)
key = key.replace(arr, '')
arr = arr.replace('[', '').replace(']', '')
newArray = False
if key not in tree:
tree[key] = []
tree[key].append(value \
if len(vector) == 1 \
else branch({} if key in tree else {},
vector[1:],
value))
else:
isInArray = False
for x in tree[key]:
if x.get(vector[1:][0], False):
isInArray = x[vector[1:][0]]
if isInArray:
tree[key].append(value \
if len(vector) == 1 \
else branch({} if key in tree else {},
vector[1:],
value))
else:
tree[key].append(value \
if len(vector) == 1 \
else branch({} if key in tree else {},
vector[1:],
value))
if len(vector) == 1 and len(tree[key]) == 1:
tree[key] = value.split(",")
else:
tree[key] = value \
if len(vector) == 1 \
else branch(tree[key] if key in tree else {},
vector[1:],
value)
return tree
在添加了一些东西之后，我的分支解决方案现在实际上工作得很好，但我想知道我是否在这里做错了/乱七八糟的事情，或者是否有更好的方法来处理我正在编辑嵌套数组的位置（我的尝试开始于if IsInArray部分代码）
我希望这两个标题编辑最后一个数组，但我最终在第一个数组上创建了一个重复的字典：
file = [{
"one.array[0].dict.arrOne[0]": "1,2,3",
"one.array[0].dict.arrTwo[0]": "4,5,6"
}]
rowList = []
for row in file:
rowObj = {}
for colName, rowValue in row.items():
rowObj.update(add_branch(rowObj, colName.split("."), rowValue))
rowList.append(rowObj)
return rowList
输出：
[
{
"one": {
"array": [
{
"dict": {
"arrOne": [
"1",
"2",
"3"
]
}
},
{
"dict": {
"arrTwo": [
"4",
"5",
"6"
]
}
}
]
}
}
]
代替：
[
{
"one": {
"array": [
{
"dict": {
"arrOne": [
"1",
"2",
"3"
],
"arrTwo": [
"4",
"5",
"6"
]
}
}
]
}
}
]
所以我不确定这个解决方案是否有任何警告，但这似乎适用于我提出的一些用例：
import json, re
def build_job():
def branch(tree, vector, value):
# Originally based on /sf/answers/3309354331/
# Convert Boolean
if isinstance(value, str):
value = value.strip()
if value.lower() in ['true', 'false']:
value = True if value.lower() == "true" else False
# Convert JSON
try:
value = json.loads(value)
except:
pass
key = vector[0]
arr = re.search('\[([0-9]+)\]', key)
if arr:
# Get the index of the array, and remove it from the key name
arr = arr.group(0)
key = key.replace(arr,'')
arr = int(arr.replace('[','').replace(']',''))
if key not in tree:
# If we dont have an array already, turn the dict from the previous
# recursion into an array and append to it
tree[key] = []
tree[key].append(value \
if len(vector) == 1 \
else branch({} if key in tree else {},
vector[1:],
value))
else:
# Check to see if we are inside of an existing array here
isInArray = False
for i in range(len(tree[key])):
if tree[key][i].get(vector[1:][0], False):
isInArray = tree[key][i][vector[1:][0]]
if isInArray and arr < len(tree[key]) \
and isinstance(tree[key][arr], list):
# Respond accordingly by appending or updating the value
tree[key][arr].append(value \
if len(vector) == 1 \
else branch(tree[key] if key in tree else {},
vector[1:],
value))
else:
# Make sure we have an index to attach the requested array to
while arr >= len(tree[key]):
tree[key].append({})
# update the existing array with a dict
tree[key][arr].update(value \
if len(vector) == 1 \
else branch(tree[key][arr] if key in tree else {},
vector[1:],
value))
# Turn comma deliminated values to lists
if len(vector) == 1 and len(tree[key]) == 1:
tree[key] = value.split(",")
else:
# Add dictionaries together
tree.update({key: value \
if len(vector) == 1 \
else branch(tree[key] if key in tree else {},
vector[1:],
value)})
return tree
file = [{
"one.array[0].dict.dont-worry-about-me": "some value",
"one.array[0].dict.arrOne[0]": "1,2,3",
"one.array[0].dict.arrTwo[1]": "4,5,6",
"one.array[1].x.y[0].z[0].id": "789"
}]
rowList = []
for row in file:
rowObj = {}
for colName, rowValue in row.items():
rowObj.update(branch(rowObj, colName.split("."), rowValue))
rowList.append(rowObj)
return rowList
print(json.dumps(build_job(), indent=4))
结果：
[
{
"one": {
"array": [
{
"dict": {
"dont-worry-about-me": "some value",
"arrOne": [
"1",
"2",
"3"
],
"arrTwo": [
"4",
"5",
"6"
]
}
},
{
"x": {
"y": [
{
"z": [
{
"id": 789
}
]
}
]
}
}
]
}
}
]