尝试学习一些地理空间python。或多或少跟随类笔记 here 。
My Code
#!/usr/bin/python
# import modules
import ogr, sys, os
# set working dir
os.chdir('/home/jacques/misc/pythongis/data')
# create the text file we're writing to
file = open('data_export.txt', 'w')
# import the required driver for .shp
driver = ogr.GetDriverByName('ESRI Shapefile')
# open the datasource
data = driver.Open('road_surveys.shp', 1)
if data is None:
print 'Error, could not locate file'
sys.exit(1)
# grab the datalayer
layer = data.GetLayer()
# loop through the features
feature = layer.GetNextFeature()
while feature:
# acquire attributes
id = feature.GetFieldAsString('Site_Id')
date = feature.GetFieldAsString('Date')
# get coordinates
geometry = feature.GetGeometryRef()
x = str(geometry.GetX())
y = str(geometry.GetY()
# write to the file
file.Write(id + ' ' + x + ' ' + y + ' ' + cover + '\n')
# remove the current feature, and get a new one
feature.Destroy()
feature = layer.GetNextFeature()
# close the data source
datasource.Destroy()
file.close()
运行这给了我以下内容:
File "shape_summary.py", line 38
file.write(id + ' ' + x + ' ' + y + ' ' + cover + '\n')
^
SyntaxError: invalid syntax
运行 Python 2.7.1
任何帮助都会很棒!
最佳答案
上一行缺少右括号:
y = str(geometry.GetY())
另外,只是一个样式注释:避免在 python 中使用变量名
file
是个好主意,因为它实际上是有含义的。尝试打开一个新的 python session 并运行 help(file)
关于python - 使用 file.write 的 Python 语法无效,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/7223570/