不知道我的变量去了哪里，"missing positional arguments"

Question

几个月前我开始学习python，所以我仍然不知道很多术语。

此程序从文本文件中获取坐标并找出最接近用户输入的点。坐标列为纬度、经度、城市名称

当然我很惊讶它找不到变量，但我更惊讶它找到了一个但没有找到其他变量。

如果有人能向我解释为什么找不到它们，我将不胜感激。

points=open_points.read()
text_length_unfilt=len(points)
text_lenth=text_length_unfilt/3
cit_point = points.split(",")

#importing all of the items from math now
from math import radians
from math import atan2
from math import cos
from math import sin
from math import sqrt


#this allows the user to imput two numbers, one for lat, one for lon.
lat1=float(input("What is the Latatude of your point in degrees? "))
lon1=float(input("That's great. Now in degrees, what is the Longitude? "))


#function to reduce clutter

def calc_dist(lat1,lon1,lat2,lon2):
    #this part converts the degrees into radians for the equation
    lon1 = radians(lon1)
    lat1 = radians(lat1)
    lon2 = radians(lon2)
    lat2 = radians(lat2)

    #here i'm just using the equation from the rubrik
    a = sin((lat1 - lat2) / 2) ** 2 + cos(lat1) * cos(lat2) * sin((lon1 - lon2) / 2) ** 2
    c = 2 * atan2(sqrt(a), sqrt(1 - a))
    distance = 3958.8 * c
    return(distance)

这是我得到的错误。

cit_dist=calc_dist((lat1, lon1, lat2, lon2))
TypeError: calc_dist() missing 3 required positional arguments: 'lon1', 'lat2', and 'lon2'

Answer 1

cit_dist=calc_dist((lat1, lon1, lat2, lon2))

错误是因为您使用了双括号。 (lat1, lon1, lat2, lon2) 被视为单个元组。

不知道我的变量去了哪里，"missing positional arguments"

Can't tell where my variables went, "missing positional arguments"

python

math