[英]Pandas: Reading in first x chunks or lines of large bz2 file using read_json
Attempting to read in a bz2 file using pd.read_json尝试使用 pd.read_json 读取 bz2 文件
i = 0
while i <3:
i = i +1
df = pd.read_json("file.bz2",lines=True, chunksize = 100)
for c in chunks:
print(c)
This doesn't stop at 3 chunks.这并不止于 3 个块。 How do i read in x amount of chunks or x amount of lines.
我如何读取 x 块或 x 行。
Try:尝试:
chunks = pd.read_json("file.bz2",lines=True, chunksize = 100)
i = 0
chunk_list = []
for chunk in chunks:
if i >= 3:
break
i += 1
# do something with that chunk like this:
result = pd.merge(chunk, merge_df)
chunk_list.append(result)
df = pd.concat(chunk_list)
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