Matplotlib Deprecation Warning : The is_first_col function was deprecated in Matplotlib 3.4 and will be removed two minor releases later

Question

When I run the below code to make subplots with this data set

data1=pd_read(file.csv)


       p               cv       V     dV     Dp         Radius      DVr       lnr     Dvlnr
0   1.062790    0.000000    0.000000    0.000000    1.062790    100.396127  0.000000    4.609124    0.000000
1   1.081085    0.000000    0.000000    0.000000    0.018295    98.697142   0.000000    4.592056    0.000000
2   1.104370    0.000000    0.000000    0.000000    0.023285    96.616170   0.000000    4.570746    0.000000
3   1.126823    0.000300    0.000185    0.000185    0.022453    94.691003   0.000098    4.550619    0.009212
4   1.150108    0.000599    0.000370    0.000185    0.023285    92.773896   0.000098    4.530165    0.009035
5   1.179214    0.000599    0.000370    0.000000    0.029106    90.484000   0.000000    4.505173    0.000000
6   1.204994    0.000599    0.000370    0.000000    0.025780    88.548159   0.000000    4.483547    0.000000
7   1.224121    0.000898    0.000555    0.000185    0.019127    87.164586   0.000136    4.467798    0.011734
8   1.258217    0.000898    0.000555    0.000000    0.034096    84.802542   0.000000    4.440326    0.000000
9   1.283165    0.000898    0.000555    0.000000    0.024948    83.153764   0.000000    4.420691    0.000000
10  1.335556    0.001198    0.000740    0.000185    0.052391    79.891820   0.000059    4.380673    0.004633
11  1.377136    0.001198    0.000740    0.000000    0.041580    77.479639   0.000000    4.350015    0.000000
12  1.407074    0.001497    0.000925    0.000185    0.029938    75.831122   0.000115    4.328509    0.008593
13  1.477760    0.001797    0.001111    0.000185    0.070686    72.203876   0.000054    4.279494    0.003783
14  1.524330    0.001797    0.001111    0.000000    0.046570    69.997966   0.000000    4.248466    0.000000
15  1.552605    0.002096    0.001295    0.000185    0.028275    68.723210   0.000148    4.230087    0.010055
16  1.634102    0.002096    0.001295    0.000000    0.081497    65.295802   0.000000    4.178928    0.000000
17  1.721420    0.002096    0.001295    0.000000    0.087318    61.983711   0.000000    4.126872    0.000000
18  1.767990    0.002096    0.001295    0.000000    0.046570    60.351020   0.000000    4.100178    0.000000
19  1.805412    0.002396    0.001481    0.000185    0.037422    59.100084   0.000151    4.079232    0.008852

fig, axes=plt.subplots(nrows=2, ncols=2, figsize=(10, 10))
data1.plot(ax=axes[0,0], x='Radius', y='V',color='y', logx=True)
data1.plot(ax=axes[0,1], x='Radius', y='DVr', logx=True)

data1.plot(ax=axes[1,0], x='Radius', y='dvdp', color='y', logx=True)

data1.plot(ax=axes[1,1], x='Radius', y='Dvlnr', logx=True)
plt.tight_layout()
#plt.savefig("out.png")

plt.show(block=False)

I get the following error.

MatplotlibDeprecationWarning: 
The is_first_col function was deprecated in Matplotlib 3.4 and will be removed two minor releases later. Use ax.get_subplotspec().is_first_col() instead.
  if ax.is_first_col():

I read few articles and did all the suggestions like plt.show(block=False) still the problem persists. Here is a snapshot of Error Message and code which I am running

Answer 1

It happened to me, You just need to upgrade pandas, using this code:

pip install --upgrade pandas