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jsonmaker.py
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jsonmaker.py
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import csv
from collections import defaultdict
import json
import sys
def ctree():
return defaultdict(ctree)
def build_leaf(name, leaf):
res = {"name": name}
# add children node if the leaf actually has any children
if len(leaf.keys()) > 0:
item = next(iter(leaf.items())) # Fetches an arbitary item from the dict items. Used to check if we have reached the end-node.
k,v = item
if len(v.keys()) > 0: # If the leaf of the leaf has keys, continue branching children recursively.
res["children"] = [build_leaf(k, v) for k, v in leaf.items()]
else: # Else if leaf of leaf has no keys, it is an end node and thus we want to put the value into the last node.
res = {"name" : name, "value" : k}
return res
def main():
fileName = sys.argv[1]
tree = ctree()
with open(str(fileName)) as csvfile:
reader = csv.reader(csvfile)
for rowid, row in enumerate(reader):
# skipping first header row. Remove is the csv contains no headers.
if rowid == 0:
continue
leaf = tree[row[0]]
for columnid in range(1, len(row)):
leaf = leaf[row[columnid]]
res = []
for name, leaf in tree.items():
res.append(build_leaf(name, leaf))
print(json.dumps(res[0])) # [0] indexing is just to remove the outer array-brackets. Remove if you want the output as an array instead.
main()