使用Python调用Azure DevOps API无法从Azure Repos下载文件

get_item_content() 方法返回的是流式响应的分片迭代生成器，不会自动聚合为完整文件内容，直接打印只会得到生成器的对象标识，不会触发实际的内容读取和文件下载。

遍历生成器拉取所有内容分片，拼接后写入本地文件即可完成下载：

• 小文件场景可以先拼接全量内容再写入，代码逻辑简单直观
• 大文件场景建议边读取分片边写入磁盘，避免全量内容占用过高内存

参考实现代码 #

小文件版本 #

from azure.devops.connection import Connection
from msrest.authentication import BasicAuthentication
import os

personal_access_token = "MY_PAT"
organization_url = "MY_ORGANIZATION_URL"
repo_id = "MY_REPOSITORY_ID"
file_path = "/FOLDER_NAME/FILE_NAME"
save_local_path = os.path.basename(file_path)

credentials = BasicAuthentication('', personal_access_token)
connection = Connection(base_url=organization_url, creds=credentials)
git_client = connection.clients.get_git_client()
content_stream = git_client.get_item_content(
    repo_id,
    path=file_path,
    download=True,
    include_content=True
)

# 拼接全量内容
file_bytes = b"".join(content_stream)
# 写入本地
with open(save_local_path, "wb") as f:
    f.write(file_bytes)
print(f"文件下载完成，保存路径：{os.path.abspath(save_local_path)}")

大文件优化版本 #

from azure.devops.connection import Connection
from msrest.authentication import BasicAuthentication
import os

personal_access_token = "MY_PAT"
organization_url = "MY_ORGANIZATION_URL"
repo_id = "MY_REPOSITORY_ID"
file_path = "/FOLDER_NAME/FILE_NAME"
save_local_path = os.path.basename(file_path)

credentials = BasicAuthentication('', personal_access_token)
connection = Connection(base_url=organization_url, creds=credentials)
git_client = connection.clients.get_git_client()
content_stream = git_client.get_item_content(
    repo_id,
    path=file_path,
    download=True,
    include_content=True
)

# 逐分片写入，不占大量内存
with open(save_local_path, "wb") as f:
    for chunk in content_stream:
        f.write(chunk)
print(f"文件下载完成，保存路径：{os.path.abspath(save_local_path)}")

内容的提问来源于stack exchange，提问作者Grenston George