检查Python中条件字典中的浮点值
我有一个字典,如图所示,我想知道我应该如何编写一些东西来检查每个键的每个值,并检查它们是否符合某个特定的条件像8以上的值等。检查Python中条件字典中的浮点值
http://i.imgur.com/qtfkK61.png
的值是浮子和有每个区域的字典值的多个值。
def main(): #defining main function
magList = [] #magnitude list of all together
regionList = [] #creating list to hold region names
wholeList = []
combinedList = []
with open("earthquakes.txt", "r") as eqList: #opens earthquake text file and gets the magnitudes
eqList.readline()
for line in eqList:
line = line.split()
magList.append(float(line[1])) #appends magnitude as float values in list
with open("earthquakes.txt", "r") as eqList2: #open file 2nd time for gathering the region name only
eqList2.readline()
for line in eqList2:
line = line.split()
line = line[0:7] + [" ".join(line[7:])] #takes whole line info and adds to list
wholeList.append(line)
greatMag = [] #creating lists for different category magnitudes
majorMag = []
strongMag = []
moderateMag = []
for x in magList: #conditions for seperating magnitude
if x >= 8:
greatMag.append(x)
elif 7 <= x <= 7.9:
majorMag.append(x)
elif 6 <= x <= 6.9:
strongMag.append(x)
elif 5 <= x <= 5.9:
moderateMag.append(x)
for line in wholeList: #takes only magnitude and region name from whole list
combinedList.append([line[7], line[1]])
infoDict = {} #creates dictionary
for key, val in combinedList: #makes one key per region and adds all values corresponding to the region
infoDict.setdefault(key, []).append(val)
print(infoDict)
for k, v in infoDict.items():
for i in v:
if i >= 8:
print("Great Magnitude:", i)
pass
if __name__ == "__main__": #runs main function
main()
for k,v in d.items(): # iterate through key, value of dict 'd'
for i in v: # iterate to dict value which is a list
if i > 8: # your condition
# do something here
pass
如果i> = 8,那么“if i> = 8”会给我一个错误: TypeError:unorderable types:str()> = int()我遇到了同样的问题,在来这里之前。它不应该给我一个字符串比较错误,因为值是浮动不是字符串,但它无论如何。 – Lompang 2014-12-04 05:20:32
@Lompang,仔细看看你的数据 - 你的* float *实际上是字符串,尝试'''如果float(i)> something:'' – wwii 2014-12-04 05:26:48
我忘了你可以改变它为float当你做条件,这是有道理的,谢谢! – Lompang 2014-12-04 05:29:50
如果你选择从你的字典一些样本,并张贴在这里这将是有益的。 – 2014-12-04 05:15:40
可能重复? http://stackoverflow.com/a/23862438/1174169。如果不是,那肯定是相关的。它使用字典理解过滤基于密钥的字典。此外,您希望*做什么*符合您的标准的数据? – cod3monk3y 2014-12-04 05:17:45
添加了我的代码,你不能运行它,因为你们没有文本文件,只是看看我在末尾如何完成 – Lompang 2014-12-04 05:25:19