Oct-15-2018, 08:55 PM
Can someone help with my assignment. I have most of the code written theres just a few errors I need help with.
the text file and assignment: https://transfernow.net/49ffh2n6pjez
The code:
Mainly the issues are with my sorting
the text file and assignment: https://transfernow.net/49ffh2n6pjez
The code:
with open('cities.txt','r', encoding = 'cp1252') as fin: # opens file with read permission
import math
season = input('Will you take your vacation during summer or winter? ')
climate = input('Do you want to go to a warm or a cold place? ')
coldsummer = [] # these are empty lists that will be filled in later
warmsummer = []
coldwinter = []
warmwinter = []
data = fin.read().splitlines(True)
for line in data[1:-1]:
line = line.split('\t') # splits elements in line with a tab
lat = line[0] # these assign variables to certain parts of the file
long = line[1]
city = line[2]
lat_deg = int(lat[0:2].strip('°').strip('N').strip('S')) # strips non integer parts
lat_min = int(lat[3:5].strip('°').strip('N').strip('S'))
long_deg = int(long[0:2].strip('°').strip('E').strip('W'))
long_min = int(long[3:5].strip('°').strip('E').strip('W'))
lat_DMS = lat_deg + (lat_min/60) # converts to degree-minute-second
lat_rad = lat_DMS*(math.pi/180) # converts to radian
long_DMS = long_deg + (long_min/60)
long_rad = long_DMS*(math.pi/180)
R = 6360 # assumed radius of Earth
Mercedlat_DMS = 37 + 22/60 # coordinate for Merced, CA in degree-minute-second
Mercedlat_rad = Mercedlat_DMS*(math.pi/180) # in radians
Mercedlong_DMS = 107 + 25/60
Mercedlong_rad = Mercedlong_DMS*(math.pi/180)
distance = 2*R*math.sin(math.sqrt(math.sin((lat_rad - Mercedlat_rad)/2)**2 + # distance formula
math.cos(lat_rad)*math.cos(Mercedlat_rad) *
math.sin((long_rad - Mercedlong_rad)/2)**2))**-1
line.append(distance)
if lat_deg > 66: # these if statements will fill in lists with appropriate values
coldsummer.append(line)
coldwinter.append(line)
elif lat_deg > 35 and lat_deg < 66:
warmsummer.append(line)
coldwinter.append(line)
else:
warmsummer.append(line)
warmwinter.append(line)
def sortByDistance(cityStats):
return cityStats[len(cityStats)-1]
""" The key argument requires a function or method that will act upon each item in the list.
The function defined above should suffice in this case.
In effect, list.sort() does this with more finesse:
length = len(self)
for i in range(length):
if key(self[i]) > key(self[i + 1]):
swap(self[i], self[i + 1]) """
coldsummer.sort(key = sortByDistance)
warmsummer.sort(key = sortByDistance)
coldwinter.sort(key = sortByDistance)
warmwinter.sort(key = sortByDistance)
for x in warmsummer: # the for loops will take desired list and print values
if season == 'summer':
if climate == 'warm':
print(x[2])
for x in coldsummer:
if season == 'summer':
if climate == 'cold':
print(x[2])
for x in warmwinter:
if season == 'winter':
if climate == 'warm':
print(x[2])
for x in coldwinter:
if season == 'winter':
if climate == 'cold':
print(x[2])Any help would be greatly appreciated. Thank!(Oct-15-2018, 08:55 PM)gonzo620 Wrote: [ -> ]Can someone help with my assignment. I have most of the code written theres just a few errors I need help with.
the text file and assignment: https://transfernow.net/49ffh2n6pjez
The code:
with open('cities.txt','r', encoding = 'cp1252') as fin: # opens file with read permission import math season = input('Will you take your vacation during summer or winter? ') climate = input('Do you want to go to a warm or a cold place? ') coldsummer = [] # these are empty lists that will be filled in later warmsummer = [] coldwinter = [] warmwinter = [] data = fin.read().splitlines(True) for line in data[1:-1]: line = line.split('\t') # splits elements in line with a tab lat = line[0] # these assign variables to certain parts of the file long = line[1] city = line[2] lat_deg = int(lat[0:2].strip('°').strip('N').strip('S')) # strips non integer parts lat_min = int(lat[3:5].strip('°').strip('N').strip('S')) long_deg = int(long[0:2].strip('°').strip('E').strip('W')) long_min = int(long[3:5].strip('°').strip('E').strip('W')) lat_DMS = lat_deg + (lat_min/60) # converts to degree-minute-second lat_rad = lat_DMS*(math.pi/180) # converts to radian long_DMS = long_deg + (long_min/60) long_rad = long_DMS*(math.pi/180) R = 6360 # assumed radius of Earth Mercedlat_DMS = 37 + 22/60 # coordinate for Merced, CA in degree-minute-second Mercedlat_rad = Mercedlat_DMS*(math.pi/180) # in radians Mercedlong_DMS = 107 + 25/60 Mercedlong_rad = Mercedlong_DMS*(math.pi/180) distance = 2*R*math.sin(math.sqrt(math.sin((lat_rad - Mercedlat_rad)/2)**2 + # distance formula math.cos(lat_rad)*math.cos(Mercedlat_rad) * math.sin((long_rad - Mercedlong_rad)/2)**2))**-1 line.append(distance) if lat_deg > 66: # these if statements will fill in lists with appropriate values coldsummer.append(line) coldwinter.append(line) elif lat_deg > 35 and lat_deg < 66: warmsummer.append(line) coldwinter.append(line) else: warmsummer.append(line) warmwinter.append(line) def sortByDistance(cityStats): return cityStats[len(cityStats)-1] """ The key argument requires a function or method that will act upon each item in the list. The function defined above should suffice in this case. In effect, list.sort() does this with more finesse: length = len(self) for i in range(length): if key(self[i]) > key(self[i + 1]): swap(self[i], self[i + 1]) """ coldsummer.sort(key = sortByDistance) warmsummer.sort(key = sortByDistance) coldwinter.sort(key = sortByDistance) warmwinter.sort(key = sortByDistance) for x in warmsummer: # the for loops will take desired list and print values if season == 'summer': if climate == 'warm': print(x[2]) for x in coldsummer: if season == 'summer': if climate == 'cold': print(x[2]) for x in warmwinter: if season == 'winter': if climate == 'warm': print(x[2]) for x in coldwinter: if season == 'winter': if climate == 'cold': print(x[2])Any help would be greatly appreciated. Thank!
Mainly the issues are with my sorting