一个python程序来读取rainfall.txt文件，然后写出一个名为rainfallfmt.txt的新文件。数据应按年度总降水量分为以下几类：[60-70]，[71-80]，[81-90]，[91-]。在每个类别下，新文件应设置每行的格式，以便在25个字符宽的字段中右对齐城市，并在5个字符宽的字段中打印降雨数据，并在字段右侧添加1位数字小数点。到目前为止，这就是我所拥有的。问题是我不知道如何分类？您能帮我一下，让我知道如何解决这个问题吗？
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# read the rainfall.txt then write out a new file called rainfall.txt
# the data should be grouped on the total annual rainfall field into the
# categories: [60-70], [71-80], [81,90], [91-]
import os.path
def main():
endofprogram = False
try:
InputFileName = input('Enter name of input file: ')
infile = open(InputFileName,'r')
OutputFileName = input('Enter name of output file: ')
# determine wether name exists
while True:
if os.path.isfile(OutputFileName):
OutputFileName = input('File Exists. Enter name again: ')
else:
outfile = open(OutputFileName,'w')
break
except IOError:
print("Error opening file - End of program")
endofprogram = True
#If there is not exception, start reading the input file
#Write the same data in formated form in new file.
if endofprogram == False:
data = []
for line in infile:
.
.# I dont know what to do in here!
.
outfile.write(data[0])
main()
# read the rainfall.txt then write out a new file called rainfall.txt
# the data should be grouped on the total annual rainfall field into the
# categories: [60-70], [71-80], [81,90], [91-]
import os.path
def main():
endofprogram = False
try:
InputFileName = input('Enter name of input file: ')
infile = open(InputFileName,'r')
OutputFileName = input('Enter name of output file: ')
# determine wether name exists
while True:
if os.path.isfile(OutputFileName):
OutputFileName = input('File Exists. Enter name again: ')
else:
outfile = open(OutputFileName,'w')
break
except IOError:
print("Error opening file - End of program")
endofprogram = True
#If there is not exception, start reading the input file
#Write the same data in formated form in new file.
if endofprogram == False:
cat_60 = []
cat_71 = []
cat_81 = []
cat_91 = []
for line in infile:
city, rain = line.split(' ')
rain = float(rain)
if 60 <= rain < 70:
cat_60.append((city, rain)) # Storing a tuple in the list
elif 70 <= rain < 80:
cat_71.append((city, rain))
elif 80 <= rain < 90:
cat_81.append((city, rain))
elif 90 <= rain :
cat_91.append((city, rain))
outfile.write("[60-70]"+'\n')
for i in range(len(cat_60)):
city = cat_60[i][0]
rain = cat_60[i][1]
outfile.write('%+25s'%(city)+'%5.1f'%(rain)+'\n')
outfile.write("[70-80]"+'\n')
for i in range(len(cat_71)):
city = cat_71[i][0]
rain = cat_71[i][1]
outfile.write('%+25s'%(city)+'%5.1f'%(rain)+'\n')
outfile.write("[80-90]"+'\n')
for i in range(len(cat_81)):
city = cat_81[i][0]
rain = cat_81[i][1]
outfile.write('%+25s'%(city)+'%5.1f'%(rain)+'\n')
outfile.write("[91-]"+'\n')
for i in range(len(cat_91)):
city = cat_91[i][0]
rain = cat_91[i][1]
outfile.write('%+25s'%(city)+'%5.1f'%(rain)+'\n')
main()
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