引发IOError“找不到％s”％路径

如何解决引发IOError“找不到％s”％路径

在过去的一周中，我花时间尝试在编译program.py时解决一个大问题。我的程序脚本是：

import numpy
import matplotlib
import matplotlib.pyplot as plt
import scipy.interpolate
from matplotlib.font_manager import FontProperties
import matplotlib.cm as cm
from mpl_toolkits.axes_grid1.axes_divider import make_axes_locatable
import os
#import pathlib
#from pathlib import Path


font = FontProperties()
font.set_family('serif')
font.set_name('Times New Roman')
font.set_style('italic')
marker_size = .5
font_size = 20.

font_size_labels = 50
font_weight = 'bold'

# Generate data:
file_path = r'C:\Users\annyc\Desktop\gap.txt' #the 'r' preceding the string turns off the eight-character Unicode escape (for a raw string) which was failing.
#file_name = os.path.basename(file_path)
x,y,z,center = numpy.loadtxt(file_path,dtype='float64',delimiter='\t',unpack=True)

# Set up a regular grid of interpolation points
xi,yi = numpy.linspace(x.min(),x.max(),500),numpy.linspace(y.min(),y.max(),500)
xi,yi = numpy.meshgrid(xi,yi)

fig = plt.figure(figsize=(10,15))
ax1 = fig.add_subplot()

for axis in ['top','bottom','left','right']:
    ax1.spines[axis].set_linewidth(3)

# Interpolate
zi = scipy.interpolate.griddata((x,y),(xi,yi),method='linear')

ax2 = fig.add_subplot()

im = plt.imshow(zi,vmin=0.,vmax=1,origin='lower',aspect = "auto",cmap='hot',extent=[x.min(),y.min(),y.max()])
ax2_divider = make_axes_locatable(ax2)

plt.xlabel('R',fontproperties=font,fontsize=font_size)
plt.xticks(size=15)
plt.tick_params(width=3,length=10)
plt.ylabel(r'$\delta$',fontsize=font_size)
plt.yticks(size=15)
#plt.title('(a)',fontsize=font_size,pad=0.5)

#plt.scatter(x,c=z)

levels = [0.2,0.3,0.4,0.5,0.6,0.7,0.8]
manual_locations = [(2.5,10),(1,(2,60),(1.5,70),(0.75,80),(2.5,40),60)]



contour = plt.contour(xi,yi,zi,colors='green',linestyles='dashdot',linewidths = 2)
plt.clabel(contour,colors = 'green',fmt = '%2.1f',fontsize=15,manual=manual_locations)

#cbar = plt.colorbar(im,ticks=[0,0.1,0.2,0.7],shrink=1.,aspect=20.,#                    orientation='horizontal',pad = 0.25)

cax2 = ax2_divider.append_axes("top",size=.3,pad=0.75)
cbar2 = fig.colorbar(im,cax=cax2,0.8,0.9,1],orientation='horizontal')
cbar2.set_label('Bandgap Width',fontsize=font_size)
cbar2.ax.tick_params(labelsize=17,width=3,direction='in',length=10)
cbar2.outline.set_edgecolor('black')
cbar2.outline.set_linewidth(3)

#plt.savefig('gap_r_delta.pdf')
plt.savefig('gap_r_delta.png',dpi=600)
plt.show()

并且在我编译该程序时始终出现的错误是：

Traceback (most recent call last):
  File "C: \ Users \ annyc \ Desktop \ data \ 3d_contour.py",line 24,in <module>
    x,center = numpy.loadtxt (file_path,dtype = 'float64',delimiter = '\ t',unpack = True)
  File "C: \ Users \ annyc \ AppData \ Local \ Programs \ Python \ Python37 \ lib \ site-packages \ numpy \ lib \ npyio.py",line 961,in loadtxt
    fh = np.lib._datasource.open (fname,'rt',encoding = encoding)
  File "C: \ Users \ annyc \ AppData \ Local \ Programs \ Python \ Python37 \ lib \ site-packages \ numpy \ lib \ _datasource.py",line 195,in open
    return ds.open (path,mode,encoding = encoding,newline = newline)
  File "C: \ Users \ annyc \ AppData \ Local \ Programs \ Python \ Python37 \ lib \ site-packages \ numpy \ lib \ _datasource.py",line 535,in open
    raise IOError ("% s not found."% path)
OSError: C: \ Users \ annyc \ Desktop \ gap.txt not found.

我不知道如何解决此问题，因为gap.txt文件与program.py位于同一文件夹中。

有人可以告诉我我做错了什么吗？谢谢！

解决方法

Python知道如何使用正斜杠处理带有类Unix路径字符串的Windows路径。

将C:\Users\annyc\Desktop\gap.txt更改为C:/Users/annyc/Desktop/gap.txt

您还可以选中os.path.exists("C:/Users/annyc/Desktop/gap.txt")，以确保文件确实位于您所说的位置。

This answer关于路径的很多信息