我是Python的新手,我正在尝试检查我正在处理的csv中的空值。我正在使用带有键对值的DictReader对象。我正在使用for循环中的密钥对值来打印出信息(在本例中为kml)。
我去运行该程序,它不喜欢我的变量赋值。这是我收到的错误。
File "./csvtokml3.py", line 31
Latvariable = str(row["lat_degrees"]),Longvariable = str(row["lon_degrees"])
SyntaxError: can't assign to function call
以下是该计划的代码。
#!/usr/bin/python
#
#
#
import csv
#Input the file name.
fname = raw_input("Enter file name WITHOUT extension: ")
data = csv.DictReader(open(fname + '.csv'), delimiter = ',')
#Open the file to be written.
f = open('csv2kml.kml', 'w')
#Writing the kml file.
f.write("<?xml version='1.0' encoding='UTF-8'?>\n")
f.write("<kml xmlns='http://www.opengis.net/kml/2.'>\n")
f.write("<Document>\n")
f.write(" <name>" + fname + '.kml' +"</name>\n")
for row in data:
f.write(" <Placemark>\n")
f.write(" <name>" + str(row["station"]) + "</name>\n")
### f.write(" <description>" + str(row[0]) + "</description>\n")
f.write(" <Point>\n")
#Check for nulls for lat and long
Latvariable = str(row["lat_degrees"]), Longvariable = str(row["lon_degrees"])
if Latvariable !=null and Longvariable !=null:
f.write(" <coordinates>" + str(row["lat_degrees"]) + "," + str(row["lon_degrees"]) + "</coordinates>\n")
f.write(" </Point>\n")
f.write(" </Placemark>\n")
f.write("</Document>\n")
f.write("</kml>\n")
f.close()
print "File Created. "
print "Press ENTER to exit. "
raw_input()
答案 0 :(得分:0)
您的语法错误,您想要:
Latvariable, Longvariable = str(row["lat_degrees"]), str(row["lon_degrees"])
而是为多个名称指定多个值。或者,将两个陈述放在不同的行上:
Latvariable = str(row["lat_degrees"])
Longvariable = str(row["lon_degrees"])
你不能像你试过的那样用逗号组合多个赋值语句;它适用于JavaScript但不适用于Python。