我在线读取了一个文件并将其转换为 JSON。我已经得到了结果,但想要格式化数字(23456876
为 23,456,875
和 345653
为 345,653
)
data_file = [{"name":"python", "downloads":23456876, "version": "3.4.2", "version_downloads": 345653 }]
我编写了代码来获取值,但如果我在 for k in key
内使用 try
except
语句。它不会转换,我也使用了另一种方法,但得到无法将自动字段转换为mamual格式或其他内容
titles = ["name", "downloads", "version", "Latest downloads"]
key = ["name", "downloads", "version", "version_downloads"]
i = 0
while i < len(data_file):
results = []
for k in key:
print("{}: {}".format(titles[key.index(k)], data_file[i][k]))
print()
i+=1
结果现在看起来像这样:
name: python
downloads: 23456876
latest version: 3.4.2
Latest downloads: 345653
如何将下载
打印为:
downloads: 2,345,676
Latest downloads: 345653
最佳答案
不确定您正在做什么索引,但您可以使用 isinstance 来检查整数并进行格式化(如果是):
data_file = [{"name":"python", "downloads":23456876, "version": "3.4.2", "version_downloads": 345653 }]
titles = ["name", "downloads", "version", "Latest downloads"]
key = ["name", "downloads", "version", "version_downloads"]
for d in data_file:
for k in key:
val = d[k]
if isinstance(val, int):
val = "{:,}".format(val)
print("{}: {}".format(titles[key.index(k)], val))
输出:
name: python
downloads: 23,456,876
version: 3.4.2
Latest downloads: 345,653
我会使用字典来映射名称并进行查找,而不是索引:
titles = ["name", "downloads", "version", "Latest downloads"]
key = ["name", "downloads", "version", "version_downloads"]
match = dict(zip(key,titles))
for d in data_file:
for k in key:
val = d[k]
if isinstance(val, int):
val = "{:,}".format(val)
print("{}: {}".format(match[k], val))
输出:
name: python
downloads: 23,456,876
version: 3.4.2
Latest downloads: 345,653
如果唯一的区别是“version_downloads”
,则仅使用 if 进行检查可能会更简单。
关于python - 如何仅格式化循环python中的项目数,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31899363/