Question

您好我正在尝试将csv文件读入数组。该文件名为vector.csv。由于某种原因，解释器正在将文件名更改为x0bector.csv，并且脚本失败。请参阅输出：如果我将文件名更改为例如cords.csv脚本运行正常。有谁知道这里发生了什么？

# Common Standard Python modules.
import sys
import os
import string
import csv

# Common MineSight Grail modules. 
from grail import gsys
from grail.data import geometry

def read_csv(filepath):
    f = open(filepath, 'r')
    vector = []
    csv_f = csv.reader(f)
    for row in csv_f:
        vector.append(row)
    return vector

def get_polylines(geometry):
    count = geometry.getpolylinecount()
    points = []
    for index in range(count): 
        points.append(geometry.getpolylinepointsat(index))

    return points


def run_script():
    """Added the following print statement for testing"""    
    print "Processing ... OK."  
    g1 = geometry.Geometry("C:\FrasersSlipReconstruction\Scripts\FRWCrest_Before.msr")
    points = get_polylines(g1)

    vectors = read_csv("C:\FrasersSlipReconstruction\Scripts\vector.csv")
    print vectors

# These two lines ensure that our script will execute the "run_script"
# routine from both MS3D and the command line.
gmain = gsys.GMAIN(run_script, __name__)
gmain.run()

输出：

Python Error (14):
Traceback (most recent call last):
  File "[minesight-9.50.05b66813-51]/grail/_script.py", line 136, in gmain
  File "[minesight-9.50.05b66813-51]/grail/gsys.py", line 167, in __call__
  File "C:\FrasersSlipReconstruction\Scripts\transform.py", line 34, in run_script
    vectors = read_csv("C:\FrasersSlipReconstruction\Scripts\vector.csv")
  File "C:\FrasersSlipReconstruction\Scripts\transform.py", line 12, in read_csv
    f = open(filepath, 'r')
IOError: (22, "invalid mode ('rb') or filename", 'C:\\FrasersSlipReconstruction\\Scripts\x0bector.csv')

Answer 1

在Windows上，使用粘贴在文件名中的r前缀：

r"C:\FrasersSlipReconstruction\Scripts\vector.csv"

\v具有特殊含义，它是一个垂直制表符。您可以通过将反斜杠\\加倍或使用原始字符串（通过在路径名前加r前缀）来逃避其含义。

Answer 2

您的文件路径需要进行转义

此处有更多信息https://docs.python.org/2.0/ref/strings.html

您可以使用＆＃34; C：\\ FrasersSlipReconstruction \\ Scripts \\ vector.csv＆＃34;

# Common Standard Python modules.
import sys
import os
import string
import csv

# Common MineSight Grail modules. 
from grail import gsys
from grail.data import geometry

def read_csv(filepath):
    f = open(filepath, 'r')
    vector = []
    csv_f = csv.reader(f)
    for row in csv_f:
        vector.append(row)
    return vector

def get_polylines(geometry):
    count = geometry.getpolylinecount()
    points = []
    for index in range(count): 
        points.append(geometry.getpolylinepointsat(index))

    return points


def run_script():
    """Added the following print statement for testing"""    
    print "Processing ... OK."  
    g1 = geometry.Geometry("C:\\FrasersSlipReconstruction\\Scripts\\FRWCrest_Before.msr")
    points = get_polylines(g1)

    vectors = read_csv("C:\\FrasersSlipReconstruction\\Scripts\\vector.csv")
    print vectors

# These two lines ensure that our script will execute the "run_script"
# routine from both MS3D and the command line.
gmain = gsys.GMAIN(run_script, __name__)
gmain.run()

Answer 3

简短回答

在引用文件名时，使用原始字符串，如r'C：\ FrasersSlipReconstruction \ Scripts \ vector.csv'或更好，os.path.join。

\ v是垂直标签的换页符。这就是解释器将其解析为\ x0b并因此解析错误的原因。

CSV阅读器问题

3 个答案: