Plotting a bar with pandas & matplotlib on R: SyntaxError: invalid syntax (<string>, line 1)

daewon_stackoverflow 0
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I am currently figuring out how to use pandas and matplotlib with R. I did a reconstruction of instructions given on how to plot a bar with some given csv data. All calculations work perfectly. Plotting the bar gives me an error: TypeError: Series.plot() should not be called with positional arguments, only keyword arguments. The order of positional arguments will change in the future. Use Series.plot(kind='bar') instead of Series.plot('bar',).

This command is given to us:

train_data['Pclass'].value_counts(sort=False).plot('bar') plt.grid()

But what it it returns is:

SyntaxError: invalid syntax (<string>, line 1)

So I tried to seperate plt.grid(), but get the error mentioned:

TypeError: `Series.plot()` should not be called with positional arguments, only keyword arguments. 
The order of positional arguments will change in the future. 
Use `Series.plot(kind='bar')` instead of `Series.plot('bar',)`.

Step-by-step, what I did:

#Import Module Pandas
import pandas as  WORKS
import matplotlib as plt WORKS

#Load the Dataset
train_data = pd.read_csv("train.csv") WORKS
train_data = train_data.set_index("Name") WORKS

#Print the Data-Head
print(train_data.head(31)) WORKS

# get the shape of the data set
train_data.shape WORKS

# get the data types
train_data.dtypes WORKS

# get the first entry
train_data.iloc[15]  WORKS

#frequency table
train_data['Pclass'].value_counts(sort=False) WORKS

# bar plot of passenger classes (absolute)
train_data['Pclass'].value_counts(sort=False).plot('bar')  DOES NOT WORK

plt.grid() DOES NOT WORK
plt.title('Absolute Häufigkeiten der Passagierklassen') WORKS

Does anyone have an idea, what I am doing wrong?

matplotlib plot pandas python
1 Answers

Frankly, you have answer in error message.

You have to use plot(kind='bar') instead of plot('bar'). That's all.

train_data['Pclass'].value_counts(sort=False).plot(kind='bar')

As for first error: in Python you can't put two commands in one line.
You could use ; to separate them but it is no preferred.

You have to put plt.grid() in new line. That's all.

EDIT:

I found another mistake: you forgot .pyplot in

import matplotlib.pyplot as plt
furas0
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